SE438539B - CONTROL VALVE FOR HIGH PRESSURE SANGA - Google Patents
CONTROL VALVE FOR HIGH PRESSURE SANGAInfo
- Publication number
- SE438539B SE438539B SE7905776A SE7905776A SE438539B SE 438539 B SE438539 B SE 438539B SE 7905776 A SE7905776 A SE 7905776A SE 7905776 A SE7905776 A SE 7905776A SE 438539 B SE438539 B SE 438539B
- Authority
- SE
- Sweden
- Prior art keywords
- valve
- diffuser
- cone
- valve seat
- control valve
- Prior art date
Links
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/20—Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Description
15 20 25 30 35 40' 7905776-6 strypstället vid ventilspaltutloppet och det smalaste diffusortvär- snittet är i högsta grad orsak till akustisk instabilitet vid stryp- ningsbetingade diffusorsvängningar. Det har bl.a. kunnat experimen- tellt fastställas att dessa ej önskade effekter ytterligare befräm- jas genom rundade inloppskanter vid utträdet från ventílspalten. p Undersökningar har utförts i syfte att utveckla en diffusor- form, med vilken nämnda nackdelar undvikes. Detta syfte uppnås en- ligt uppfinningen med hjälp av en anordning enligt kännetecknen av åtföljande patentkrav 1. _ Uppfinníngen beskrives nedan i form av utföríngsexempel och med hänvisning till åtföljande ritningar. 15 20 25 30 35 40 '7905776-6 the throttle point at the valve gap outlet and the narrowest diffuser cross-section is to the highest degree the cause of acoustic instability during throttle-induced diffuser oscillations. It has i.a. It has been possible to establish experimentally that these undesired effects are further promoted by rounded inlet edges at the exit from the valve gap. Studies have been carried out with the aim of developing a diffuser form with which the mentioned disadvantages are avoided. This object is achieved according to the invention by means of a device according to the features of appended claim 1. The invention is described below in the form of exemplary embodiments and with reference to the accompanying drawings.
Fig. 1 visar en högtrycksångregleríngsventil utförd med kän- netecken enligt uppfinningen. Fig. Z visar isstörre skala ett ut- snitt av fig. 1, varvid återges en del av ventilkroppen med dif- fusor.Fig. 1 shows a high-pressure steam control valve made with characteristics according to the invention. Fig. Z shows an ice-larger scale, a section of Fig. 1, in which a part of the valve body is shown with diffusers.
Den på fig. 1 visade ângregleringsventilen har ett konven- tionellt ventilhus 1, i vars nedre del sitter en ventilsäteskropp 2. l den övre delen befinner sig en ventilstyrningskropp 3 och mellan ventilsäteskroppen 2 och ventilstyrningskroppen 3 är anord- nad en ångsil 4. Ventilstyrningskroppen 3 är upptill lagrad i en mellanfläns 5 och innehåller en styrbussning 6 för en axiellt rör- lig ventilspindel 7. I spíndelns övre ände förbinder en ledbar men vridfast koppling 8 ventilspindeln 7 med en manöverspindel 9 av en ej visad servomotor. I den nedre änden av ventilspindeln 7 är en ventilkropp 10 fäst. Ventilkroppens mantel är axiellt styrd i en borrning i ventilstyrningskroppen 3. Den nedre avslutningen av ventilkroppen bildar en ventilkägla 11, som i det visade läget an- ligger mot ett koniskt ventilsäte 12 i den övre delen av ventil- säteskroppen 2.The steam control valve shown in Fig. 1 has a conventional valve housing 1, in the lower part of which a valve seat body 2 is located. In the upper part there is a valve guide body 3 and between the valve seat body 2 and the valve guide body 3 a steam strainer 4 is arranged. is mounted at the top in an intermediate flange 5 and contains a guide bushing 6 for an axially movable valve spindle 7. At the upper end of the spindle, a hinged but rotatable coupling 8 connects the valve spindle 7 to an operating spindle 9 of a servomotor (not shown). A valve body 10 is attached to the lower end of the valve stem 7. The jacket body is axially guided in a bore in the valve guide body 3. The lower end of the valve body forms a valve cone 11, which in the position shown abuts against a conical valve seat 12 in the upper part of the valve seat body 2.
Ventilsäteskroppen 2 är centralt utformad som diffusor be- stående av en cylindrisk díffusordel, nedan benämnd diffusorcylín- der 13, och en diffusorkon 14. Väsentligt för apparatens funktion enligt det inledningsvis anförda syftet är den skarpa kantlinjen 15 mellan den genom ventilsätet 12 bestämda konen och diffusor- cylindern 13. Om man avrundade denna övergång från ventilsätet till diffusorcylindern, den s.k. ínträdesläppen; skulle där uppstå akus- tiska instabiliteter, vilka emellertid í enlighet med uppfinningens syfte skall undvikas. De strypningsbetingade akustiska impulserna kan emellertid enligt utförda undersökningar undvikas om inträdes- läppen utföres med en skarp kant och konvexa partier undvíkes ut- 10 15 20 25 30 35 40 _3_ 7905776-6 med diffusorns kontur i övrigt och särskilt tvärsnittsförträng- ningar undvikes.The valve seat body 2 is centrally designed as a diffuser consisting of a cylindrical diffuser part, hereinafter referred to as diffuser cylinders 13, and a diffuser cone 14. Essential for the operation of the apparatus according to the initially stated purpose is the sharp edge 15 between the cone and diffuser defined by the valve seat 12. cylinder 13. If this transition from the valve seat to the diffuser cylinder, the so-called ínträdesläppen; acoustic instabilities would arise there, which, however, in accordance with the object of the invention should be avoided. However, according to studies, the throttling-related acoustic impulses can be avoided if the entrance lip is made with a sharp edge and convex portions are avoided with the contour of the diffuser in general and especially cross-sectional narrowings are avoided.
Pâ fig. 2, som i större skala visar geometrín i omrâdet för ventilsätet och den övre delen av diffusorn, är diffusorns meri- diankontur enligt aktuell uppfattning inritad med punktstreckade linjer.In Fig. 2, which on a larger scale shows the geometry in the area of the valve seat and the upper part of the diffuser, the meridian contour of the diffuser is, according to the current view, drawn with dotted lines.
Längden av diffusorcylindern 13 skall väljas så, att ström- ningen över kantlinjen 16 mellan díffusorcylindern 13 och diffu- sorkonen 14 är etablerad, dvs. diffusorcylindern skall sluta på nedströmssidan så nära som möjligt under återströmningszonen.The length of the diffuser cylinder 13 must be selected so that the flow over the edge line 16 between the diffuser cylinder 13 and the diffuser cone 14 is established, ie. the diffuser cylinder should end on the downstream side as close as possible below the backflow zone.
Med hänsyn till att man i praktiken ej kan räkna med att exakt kontrollera alla driftsförhällanden, utföres emellertid diffusor- cylindern för säkerhets skulle något längre än vad som motsvarar återströmningsgränsen för en bestämd ventil enligt utförda expe- riment.However, in view of the fact that in practice it is not possible to expect to control exactly all operating conditions, the diffuser cylinder for safety would be made slightly longer than what corresponds to the backflow limit for a specific valve according to performed experiments.
I det beskrivna utföringsexemplet begränsas diffusorn i me- ridiansnitt av en till den skarpa kanten 15 på inträdesläppen an- slutande diffusorcylinder 13 och därpå följande diffusorkon 14.In the described embodiment, the diffuser is limited in meridian section by a diffuser cylinder 13 adjoining the sharp edge 15 of the entry lip and the subsequent diffuser cone 14.
Enligt uppfinningen är emellertid även andra konturer möjliga, så länge konturen bildas av en linjeprofil, som ej innehåller några från diffusoraxeln betraktat konvexa linjeelement, bortsett från skarpa kanter, dvs. knäckställen där tvâ linjedelar samman- stöter.According to the invention, however, other contours are also possible, as long as the contour is formed by a line profile which does not contain any convex line elements viewed from the diffuser shaft, apart from sharp edges, i.e. buckling points where two line sections collide.
Detta villkor uppfylles bl.a. även av en diffusor, som efter den skarpa kanten på inträdesläppen har en svagt divergerande kon i stället för diffusorcylíndern 13, till vilken kon ansluter sig en kon med större öppningsvinkel efter återströmningszonen. Även här måste såsom i alla andra tänkbara fall kantlinjen mellan de båda konerna bilda en skarp avlösníngskant. Diffusorn kan emeller- tid även bestâ av en eller flera konkavt välvda diffusordelar el- ler av kombinationer av sådana med cylindriska eller koníska dif- fusordelar, varvid emellertid enligt ovan tvärsnítten i strömnings- riktningen måste ökas.This condition is met i.a. also by a diffuser which, after the sharp edge of the entry lip, has a slightly diverging cone instead of the diffuser cylinder 13, to which the cone adjoins a cone with a larger opening angle after the backflow zone. Here too, as in all other conceivable cases, the edge line between the two cones must form a sharp replacement edge. However, the diffuser may also consist of one or more concavely arched diffuser parts or of combinations of such with cylindrical or conical diffuser parts, whereby, however, according to the above, the cross-section in the direction of flow must be increased.
Kravet att de nedströms belägna väggarna efter det smalaste genomloppstvärsnittet av ventilspalten ej får ha nägra konvexa yt- delar gäller även för ventilkäglan. I den på ritningen visade ut- föringsformen är den nedre ändytan av ventilkroppen 10 utformad som en inre stympad kon. Ändytan kan emellertid även vara plan el- ler Eramskjutande i utströmníngsriktningen, men i hwet fall får den ur ventilspalten avgående strömningen stöta pä konvext krökta 7905776-6 _4_ ytor på sin väg in i diffusorn, då effekten av åtgärderna enligt uppfinningen i sådant fall skulle pâverkas.The requirement that the downstream walls after the narrowest passage cross-section of the valve gap must not have any convex surface parts also applies to the valve cone. In the embodiment shown in the drawing, the lower end surface of the valve body 10 is designed as an inner truncated cone. However, the end surface can also be planar or projecting in the outflow direction, but in any case the flow leaving the valve gap may encounter convexly curved surfaces on their way into the diffuser, as the effect of the measures according to the invention in such a case would be affected. .
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH741578A CH632816A5 (en) | 1978-07-07 | 1978-07-07 | Control (regulating) valve, in particular for high-pressure steam |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7905776L SE7905776L (en) | 1980-01-08 |
SE438539B true SE438539B (en) | 1985-04-22 |
Family
ID=4324772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7905776A SE438539B (en) | 1978-07-07 | 1979-07-02 | CONTROL VALVE FOR HIGH PRESSURE SANGA |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5514393A (en) |
CH (1) | CH632816A5 (en) |
DE (2) | DE7821407U1 (en) |
FR (1) | FR2430566A1 (en) |
SE (1) | SE438539B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3137720A1 (en) * | 1981-09-22 | 1983-04-07 | Kraftwerk Union AG, 4330 Mülheim | CONTROL VALVE, ESPECIALLY FOR CONTROL AND REGULATION OF STEAM TURBINES |
DE19636674A1 (en) * | 1996-09-10 | 1998-03-12 | Ghh Borsig Turbomaschinen Gmbh | Steam turbine control |
JPH11349975A (en) * | 1998-06-03 | 1999-12-21 | Idemitsu Kosan Co Ltd | Metal processing oil composition for copper and copper alloy |
JP2006002798A (en) * | 2004-06-15 | 2006-01-05 | Daikin Ind Ltd | Closing valve for refrigerant |
US8360095B2 (en) | 2008-02-01 | 2013-01-29 | Exxonmobil Chemical Patents Inc. | High-pressure valve |
DE102010024342B4 (en) * | 2010-06-18 | 2014-10-23 | Siemens Aktiengesellschaft | Control valve for a steam turbine |
FR3064330B1 (en) * | 2017-03-23 | 2021-12-03 | Valeo Systemes De Controle Moteur | FLUID FLOW REGULATION VALVE |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2219324A (en) * | 1938-08-01 | 1940-10-29 | Ludlow Valve Mfg Co Inc | Valve |
US2289239A (en) * | 1940-07-30 | 1942-07-07 | Westinghouse Electric & Mfg Co | Valve for governor apparatus |
US2666452A (en) * | 1951-12-29 | 1954-01-19 | Gen Electric | Valve actuating mechanism |
BE579849A (en) * | 1958-06-23 | 1959-10-16 | Licentia Gmbh | Valve, e.g. quick-closing valve for steam or gas turbines |
FR1248029A (en) * | 1959-10-28 | 1960-10-31 | Alsthom Cgee | Globe valve |
DE1266086B (en) * | 1964-06-05 | 1968-04-11 | Bopp & Reuther Gmbh | Safety valve additionally loaded by a piston pressurized with pressure medium, especially for toxic or radioactive media |
-
1978
- 1978-07-07 CH CH741578A patent/CH632816A5/en not_active IP Right Cessation
- 1978-07-17 DE DE19787821407 patent/DE7821407U1/en not_active Expired
- 1978-07-17 DE DE19782831368 patent/DE2831368C2/en not_active Expired
-
1979
- 1979-07-02 SE SE7905776A patent/SE438539B/en not_active IP Right Cessation
- 1979-07-04 FR FR7917338A patent/FR2430566A1/en active Granted
- 1979-07-05 JP JP8447479A patent/JPS5514393A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE7821407U1 (en) | 1980-04-10 |
DE2831368A1 (en) | 1980-01-17 |
FR2430566B1 (en) | 1982-04-23 |
DE2831368C2 (en) | 1985-12-19 |
SE7905776L (en) | 1980-01-08 |
CH632816A5 (en) | 1982-10-29 |
JPS5514393A (en) | 1980-01-31 |
FR2430566A1 (en) | 1980-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4979197B2 (en) | High recovery sonic gas valve | |
RU2439407C2 (en) | Valve assembly | |
JP2017089864A (en) | Flow regulating valve | |
NO178983B (en) | Apparatus for pressure and flow rate regulation of a compressible or incompressible medium | |
EP0616853B1 (en) | Hydrocyclone | |
SE438539B (en) | CONTROL VALVE FOR HIGH PRESSURE SANGA | |
US3386458A (en) | Internally actuated combined oxygen pressure regulator and oxygenair dilution valves for respiratory apparatus | |
US3458170A (en) | Pressure gradient valve | |
DE102014209195A1 (en) | Turbocharger with variable nozzle | |
CN105546209A (en) | Choked Flow Valve With Clamped Seat Ring | |
EP0302197B1 (en) | Compressed-air blowing device | |
US2393442A (en) | Valve | |
US3008652A (en) | Emergency shower head | |
EP0116735A1 (en) | A high pressure letdown valve | |
SE505360C2 (en) | Centrifuge drum outlet nozzle | |
US4570464A (en) | Jet dyeing apparatus | |
JP2020094607A (en) | Flow control valve device | |
DE102016010582B4 (en) | Exhaust gas recirculation device for an internal combustion engine | |
NO781566L (en) | YARN TEXTURE NOZZLE. | |
DE973164C (en) | Device for deflecting a beam emerging from a line | |
NZ247616A (en) | Ball valve with offset ball through-duct so that upstream of duct is closed before downstream of duct contacts sealing rings | |
BR102021009461A2 (en) | IMPROVED DESCALING NOZZLE ASSEMBLY | |
DE550090C (en) | Valve housing | |
JPS5846277A (en) | Variable constant-flow valve apparatus | |
DE10016924A1 (en) | Jet pump has two fluid feeds to be mixed for delivery where the jet tube has an axial adjustment against the mixer tube which can be set and varied while the pump is operating |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7905776-6 Effective date: 19890727 Format of ref document f/p: F |