DK166470B1 - REDUCING VALVE - Google Patents
REDUCING VALVE Download PDFInfo
- Publication number
- DK166470B1 DK166470B1 DK577985A DK577985A DK166470B1 DK 166470 B1 DK166470 B1 DK 166470B1 DK 577985 A DK577985 A DK 577985A DK 577985 A DK577985 A DK 577985A DK 166470 B1 DK166470 B1 DK 166470B1
- Authority
- DK
- Denmark
- Prior art keywords
- piston
- valve
- gasket
- spindle
- annular
- Prior art date
Links
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000001427 coherent effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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
- F16K25/00—Details relating to contact between valve members and seats
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/28—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction of non-metals
-
- 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/02—Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
- G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/166—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using pistons within the main valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Fluid-Driven Valves (AREA)
- Multiple-Way Valves (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
- Gas Separation By Absorption (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Earth Drilling (AREA)
Description
DK 166470 B1 tDK 166470 B1 t
Den foreliggende opfindelse angår en reduktionsventil af den i krav 1 's indledning angivne art og som kendt fra DE-PS 125 906.The present invention relates to a reduction valve of the kind set forth in the preamble of claim 1 and as known from DE-PS 125 906.
Fra JP brugsmønsterpublikation nr. 45-27184 kendes endvidere'en reduktionsventil som foru-5 den en hovedventil også har en styreventil, som er anbragt i en fluidumbane mellem reduktionsventilens (hovedventilens) indløbsside og et hulrum over et stempel i forbindelse med hovedventilen for at styre denne. Styreventilen styres af en membran, som udbøjes i overensstemmelse med fluidumtrykket på udløbssiden af hovedventilen, for at regulere mængden af fluidum, som strømmer ind i nævnte hulrum og derved driver stemplet og den dermed for-10 bundne hovedventil i overensstemmelse med en trykforskel mellem den øvre endeflade på stemplet og dets nedre endeflade, som er udsat for udløbstrykket.Furthermore, from JP usage pattern publication No. 45-27184, a reduction valve known as a main valve is also known to have a control valve arranged in a fluid path between the inlet side of the reduction valve (main valve) and a cavity above a piston in connection with the main valve. this. The control valve is controlled by a diaphragm which deflects in accordance with the fluid pressure on the outlet side of the main valve to regulate the amount of fluid flowing into said cavity and thereby drives the piston and the associated main valve in accordance with a pressure difference between the upper end face of the piston and its lower end face exposed to the outlet pressure.
Det fluidumtryk, som virker på stemplets øvre endeflade, skyldes lækage af det "primære" medium, som er strømmet til det nævnte hulrum over stemplet gennem styreventilen, gennem et 15 gab mellem stempel og cylinder. Hvis gabet er lille, er gennemsivningen også lille, og dette kan medføre, at hovedventilen forbliver åben, og/eller at stemplet brændes fast i cylinderen. Er gabet så stort, at dette undgås, vil den større gennemsivning reducere den kraft, som skal drive hovedventilen. For så vidt angår styreventilen vil trykket i kammeret under membranen, hvortil det "primære" medium strømmer gennem et gab mellem en ventilspindel og et spindelstyr, og 20 hvor trykket skal være det sekundære tryk eller udløbstrykket, variere og medføre fejlfunktion.The fluid pressure acting on the upper end surface of the piston is due to leakage of the "primary" medium flowing to said cavity over the piston through the control valve, through a gap between piston and cylinder. If the gap is small, the leakage is also small and this can cause the main valve to stay open and / or the piston to burn in the cylinder. If the gap is so large that this is avoided, the greater leakage will reduce the force that must drive the main valve. In the case of the control valve, the pressure in the chamber below the diaphragm to which the "primary" medium flows through a gap between a valve spindle and a spindle guide, and where the pressure is to be the secondary or outlet pressure, will vary and cause malfunction.
Gøres gabet mindre for at hindre gennemsivningen, vil forøget glidemodstand forstyrre driften.If the gap is reduced to prevent leakage, increased slip resistance will interfere with operation.
I et forsøg på at undgå de nævnte ulemper er det i nævnte JP publikation foreslået at anvende et fast gab mellem stempel og cylinder og at anbringe en metalring i en ringformet rille i stemp-25 lets cylindervæg, hvorhos fluidum over stemplet tillades at sive gennem gabet mellem metalringen og cylinderen.In an attempt to avoid the aforementioned drawbacks, it is proposed in the aforementioned JP publication to use a fixed gap between piston and cylinder and to place a metal ring in an annular groove in the cylinder wall of the piston where fluid over the piston is allowed to seep through the gap. between the metal ring and the cylinder.
Denne konstruktion kan imidlertid medføre ustabil glidebevægelse og dermed fejlfunktionering. Metalringen, som typisk er fremstillet af fosforbronze, giver uensartet gennemsivning af medium 30 mellem metalringen og cylinderens inderflade på grund af ringens uregelmæssige ydre diameter og kan i nogle tilfælde medføre fastklemninger på grund af termiske udvidelser. Det er derfor nødvendigt at erstatte fosforbronzeringen med en anden ring, som udøver lille elastisk kraft og lille kontaktmodstand.However, this construction can cause unstable sliding motion and thus malfunction. The metal ring, which is typically made of phosphor bronze, provides uniform penetration of medium 30 between the metal ring and the inner surface of the cylinder due to the irregular outer diameter of the ring and may in some cases cause clamping due to thermal expansion. It is therefore necessary to replace the phosphor bronze ring with another ring which exerts little elastic force and little contact resistance.
35 Fra GB-PS 10 83 765 kendes en reduktionsventil, hvor tætningen mellem et stempel og en dette omgivende ringformet del sker ved hjælp af en tætningsring, som er placeret i en ringnot i stemplet, er fremstillet af PTFE, og som af en i ringnoten anbragt og denne tætnende O-ring trykkes udad mod den ringformede del.From GB-PS 10 83 765 a reduction valve is known in which the seal between a piston and this surrounding annular part is made by means of a sealing ring, which is located in a ring groove in the piston, made of PTFE and which of one in the ring groove and this sealing O-ring is pressed outwardly against the annular portion.
tf 2 DK 166470 B1tf 2 DK 166470 B1
Det er almindeligt at anvende tætningsringe, som i omfangsretningen er delt et eller flere steder, og som dér med enderne overlapper trinformet eller på anden måde. Det er også kendt at kombinere sådanne tætningsringe med et fjederelement, som trykker tætningsringen mod den flade, som skal tætnes (H.H. Buchter "Industrial Sealing Technology", John Wiley and Sons, 5 New York, 1979, side 285-296).It is common to use sealing rings, which are divided in one or more places in the circumferential direction and which overlap the step shape or otherwise with the ends. It is also known to combine such sealing rings with a spring element which presses the sealing ring against the surface to be sealed (H.H. Buchter "Industrial Sealing Technology", John Wiley and Sons, 5 New York, 1979, pages 285-296).
Formålet med opfindelsen er at anvise en reduktionsventil af den omhandlede art, og hvor de indbyrdes giidelige dele udviser stor tæthed, men lille glidemodstand og hindrer fastklemning ved termisk udvidelse.The object of the invention is to provide a reduction valve of the kind in question, in which the mutually favorable parts exhibit high tightness but low slip resistance and prevent clamping by thermal expansion.
1010
Dette opnås ifølge opfindelsen ved den i krav 1 anviste udformning.This is achieved according to the invention in the embodiment of claim 1.
Opfindelsen skal i det følgende forklares nærmere i forbindelse med tegningen, hvor 15 fig. 1 viser et lodret snit gennem en reduktionsventil ifølge opfindelsen, fig. 2 i større målestoksforhold en del af reduktionsventilen set fra siden og delvis gennemskåret og fig. 3 ligeledes i større målestoksforhold et lodret snit gennem reduktionsventilens styreventil.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be explained in more detail in connection with the drawing, in which FIG. 1 is a vertical section through a reduction valve according to the invention; FIG. 2 is an enlarged side view of the reduction valve, partially cut away, and FIG. 3 also, in larger scale, a vertical section through the reducing valve control valve.
2020
Den i fig. 1 viste reduktionsventil omfatter et fanghus 29 med et bunddæksel 31 og indeholdende et flydelegeme 34, et hovedhus 1 indeholdende et stempel 6 i en cylinder 9, en hovedventil 5 og en separatorstruktur omfattende hvirvelvinger 27 og en afløbsdel 28, et styrehus 32 indeholdende en styreventil 11 og et fjederhus 33 indeholdende en trykfastlæggende fjeder 14.The FIG. 1, includes a catch housing 29 with a bottom cover 31 and containing a float body 34, a main housing 1 containing a piston 6 in a cylinder 9, a main valve 5 and a separator structure comprising swirls 27 and a drain portion 28, a control housing 32 containing a control valve 11. and a spring housing 33 containing a pressure setting spring 14.
25 De nævnte hovedkomponenter er sammensat i den nævnte rækkefølge, som det er vist i fig. 1, idet der mellem samvirkende flanger er anbragt passende pakninger. En membran 15 er anbragt mellem styrehuset 32 og fjederhuset 33.25 The main components mentioned are composed in the order mentioned, as shown in FIG. 1, with suitable gaskets being arranged between cooperating flanges. A diaphragm 15 is disposed between the guide housing 32 and the spring housing 33.
Hovedhuset 1 har en indløbspart 2 og en udløbspart 3, som er koaksiale og indbyrdes forbun-30 det via en ventilport 4. Hovedventilen 5, der af en fjeder trykkes op mod et ventilporten 4 omgivende ventilsæde, har en central tap, der strækker sig opad og i ventilporten 4 ligger an mod den nederste ende af en stempelstang, der strækker sig nedad fra stemplet 6.The main housing 1 has an inlet portion 2 and an outlet portion 3 which are coaxial and interconnected via a valve port 4. The main valve 5, which is pressed by a spring against the valve seat 4 surrounding a valve port 4, has a central pin extending upward and in the valve port 4 abuts the lower end of a piston rod extending downwardly from the piston 6.
Styreventilen 11 er placeret mellem en forbindelsesboring 12 fra rummet under hovedventilen 5 35 og en anden forbindelsesboring 13 fra rummet over stemplet 6 og trykkes af en fjeder opad mod membranen 15. Membranen 15 trykkes fra den modsatte side til en fjederskive 23 ved hjælp af den trykfastlæggende fjeder 14, hvis kraft kan indstilles ved hjælp af en stilleskrue 22,The control valve 11 is located between a connection bore 12 from the space under the main valve 5 35 and another connection bore 13 from the space above the piston 6 and is pressed by a spring upwards towards the diaphragm 15. The diaphragm 15 is pressed from the opposite side to a spring washer 23 by means of the pressure setting spring 14, the power of which can be adjusted by means of a set screw 22,
Et kammer under membranen 15, membrankammeret, er gennem en forbindelsesboring 26 i DK 166470 B1 3 forbindelse med udløbsporten 3, medens rummet over membranen gennem en forbindelsesboring 25 er i forbindelse med den omgivende atsmosfære.A chamber under the diaphragm 15, the diaphragm chamber, is connected through a connecting bore 26 in DK 166470 B1 3 to the outlet port 3, while the space above the diaphragm through a connecting bore 25 is in communication with the surrounding atmosphere.
Afløbsdelen 28 er forsynet med en skærm 32 i rummet under ventilporten 4. Afløbsdelen om-5 fatter to koaksiale, cylindriske legemer, af hvilke det inderste legemes nedre ende er udvidet, og et antal hvirvelvinger 27 er anbragt mellem det inderste og det yderste legeme.The drain portion 28 is provided with a screen 32 in the space below the valve port 4. The drain portion comprises two coaxial cylindrical bodies, of which the lower end of the inner body is extended, and a plurality of vortex wings 27 are disposed between the inner and outer bodies.
I fanghuset 29 bæres et halvkugleformet flydelåg 35 med et antal gennemgående huller 36 over bundpladen 31 ved hjælp af passende, ikke viste organer, og et hult, kugleformet fiydelegeme 10 34 er fritsvævende mellem låget 35 og bundpladen 31. I bundpladen 31 findes en drænport 37 med et ventilsæde 38, der normalt er lukket for flydelegemet 34, som så udgør ventillegeme.In the catch housing 29, a hemispherical float lid 35 is carried with a number of through-holes 36 over the base plate 31 by means of suitable, not shown, and a hollow, spherical fixture 10 34 is free-floating between the lid 35 and the base plate 31. A drain port 31 is provided. with a valve seat 38 normally closed to the floating body 34, which then constitutes the valve body.
Under drift er hovedventilen 5 normalt lukket, og en opadrettet fjederkraft og styreventilen 11 er normalt åbnet af en forudindstillet nedadrettet fjederkraft fra fjederen 14 og stilleskruen 22. Når 15 en strøm af damp indeholdende vandpartikler træder ind gennem indløbsporten 2, vil trykket via forbindelsesboringen 12 forplantes til rummet under styreventilen 11 og derefter til rummet over stemplet 6 gennem den åbne styreventil og forbindelsesboringen 13. Herved trykkes stemplet nedad, og hovedventilen 5 åbnes. Dampen ledes ind i fanghuset 29, passerer den åbne hovedventil 5 og ledes ud gennem udløbsporten 3. Under denne passage vil hvirvelvingerne 27 20 ved hjælp af centrifugalkraften udskille vandpartikleme, slam drypper ned i bunden af fanghuset 29. Når ciér her er opsamlet tilstrækkeligt vand til at løfte flydelegemet 34, vil dette åbne drænporten, således at vandet kan undslippe gennem denne.During operation, the main valve 5 is normally closed and an upward spring force and the control valve 11 are normally opened by a preset downward spring force from the spring 14 and the set screw 22. When 15 a stream of steam containing water particles enters through the inlet port 2, the pressure via the connection bore 12 is propagated. to the space below the control valve 11 and then to the space above the piston 6 through the open control valve and the connecting bore 13. Hereby the plunger is pressed downwards and the main valve 5 is opened. The steam is led into the catch house 29, passes the open main valve 5 and is discharged through the outlet port 3. During this passage, the vortex wings 27 20, by means of the centrifugal force, will separate the water particles, sludge drips into the bottom of the catch house 29. When sufficient water has been collected here for lifting the floating body 34 will open the drainage port so that the water can escape through it.
Hvis damptrykket overstiger en forudbestemt værdi, vil membranen 15 mod fjederens 14 virk-25 ning lukke styreventilen 11. Dette medfører balance mellem trykket over og under stemplet på grund af sivning gennem en åbning 10 i dette, således at også hovedventilen 5 lukkes, hvorved dampgennemstrømnngen ophører.If the vapor pressure exceeds a predetermined value, the diaphragm 15 against the action of the spring 14 will close the control valve 11. This results in a balance between the pressure above and below the piston due to seepage through an opening 10 therein, so that the main valve 5 is also closed, whereby the steam flow ceases.
Fig. 2 viser mere detaljeret en del af stempelaggregatet. Dette omfatter en stempelcylinder 9 30 og stemplet 6 indsat i denne med en lille frigang. I stemplet 6 findes åbningen 10 til forbindelse af de to stempelsider som tidligere nævnt. To ringformede riller 61 i cylinderkappen er hver forsynet med en i det væsentlige ringformet pakning 8. Pakningen 8 er fremstillet af fluorinhar-piks og ikke sammenhængende over i hvert fald en del 62. En bladfjeder 7 er anbragt mellem pakningen 8 og rillens 61 bund og trykker pakningen an mod cylinderens 9 indervæg.FIG. 2 shows in more detail part of the piston assembly. This includes a piston cylinder 9 30 and the piston 6 inserted therein with a small clearance. In the plunger 6, the opening 10 is provided for connecting the two plunger sides as previously mentioned. Two annular grooves 61 in the cylinder cover are each provided with a substantially annular gasket 8. The gasket 8 is made of fluorine resin and not coherent with at least a portion 62. A leaf spring 7 is arranged between the gasket 8 and the bottom of the groove 61 and presses the gasket against the inner wall of the cylinder 9.
Af fig. 3 fremgår, hvorledes styreventilen omfatter et spindelstyr16 og en styrespindel 17, der er indsat i en styreboring 161 i spindelstyret. Om boringens 161 nedre ende er udformet et ventilsæde 162 for samvirke med et ventillegeme 21 på spindlen 17. Skærende styreboringer 161 er 35 4 DK 166470 B1 i spindelstyret 16 udformet en vandret gennemboring 18, der er forbundet med forbindelsesboringen 13 (fig. 1).In FIG. 3 shows how the control valve comprises a spindle guide 16 and a control spindle 17 inserted in a guide bore 161 in the spindle guide. About the lower end of the bore 161 is formed a valve seat 162 for cooperating with a valve body 21 on the spindle 17. Cutting guide bores 161 are formed in the spindle guide 16 a horizontal bore 18 which is connected to the connecting bore 13 (Fig. 1).
Styrespindlen 17 omfatter et skaft 171 med en diameter, der er væsentlig mindre end den ind-5 vendige diameter af styreboringen 161. Skaftet bærer en flangelignende del 172 med større diameter lige over den vandrette gennemboring 18, et ventillegeme 21, der er fastgjort til den nederste ende, og et topstykke 173, der er prespasset på den øverste ende. Mellem den flangelignende del 172 og topstykket 173 er glideligt på skaftet anbragt en bøsning 20. Denne samt den flangelignende del 172 og topstykket 173 har en diameter, der er lidt mindre end den 10 indvendige diameter i styreboringen 161. På hver side af bøsningen 20 er anbragt en ringformet pakning 19 af fluorinharpiks og ikke sammenhængende over i hvert fald en del 191. Den samlede udstrækning i aksial retning af bøsningen 20 og pakningerne 19 er mindre end afstanden mellem den flangelignende del 172 og topstykket 173, og en væsentlig aksial bevægelse af elementerne 19 og 20 er herved muliggjort. Udformningen tillader, at eventuel termisk udvi-15 delse af pakningerne 19 i såvel aksial som radial retning kan absorberes. På topstykket 173 er påsat en kuppelformet hætte 24 som anlægsfiade mod membranen 15 (fig. 1).The guide spindle 17 comprises a shaft 171 having a diameter substantially smaller than the internal diameter of the guide bore 161. The shaft carries a larger diameter flange-like portion 172 just above the horizontal bore 18, a valve body 21 attached to it. bottom end, and a top piece 173 press-fit on the upper end. Between the flange-like part 172 and the head piece 173 is slidably mounted on the shaft 20. This as well as the flange-like part 172 and the head piece 173 have a diameter slightly smaller than the inside diameter of the guide bore 161. On each side of the bush 20 arranged an annular gasket 19 of fluorine resin and not coherent with at least a portion 191. The overall axial extension of the sleeve 20 and gaskets 19 is less than the distance between the flange-like portion 172 and the headpiece 173, and a substantial axial movement of the members 19 and 20 are hereby made possible. The design allows any thermal expansion of the gaskets 19 in both axial and radial directions to be absorbed. A dome-shaped cap 24 is applied to the top piece 173 as abutment face against the membrane 15 (Fig. 1).
Som nævnt i det foregående er pakningerne 8 og 19 fremstillet af fluorinharpiks og adskilt over i hvert fald en del 62 henholdsvis 191. Pakningerne udviser en væsentlig nedsat glidemodstand, 20 og eventuel termisk udvidelse absorberes effektivt.As mentioned above, the gaskets 8 and 19 are made of fluorine resin and separated over at least a portion 62 and 191, respectively. The gaskets exhibit a substantially reduced slip resistance, 20 and any thermal expansion is effectively absorbed.
Claims (4)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19070684 | 1984-12-14 | ||
| JP1984190706U JPH0726733Y2 (en) | 1984-12-14 | 1984-12-14 | Pressure reducing valve |
| JP13984685 | 1985-09-11 | ||
| JP1985139846U JPH0454498Y2 (en) | 1985-09-11 | 1985-09-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK577985D0 DK577985D0 (en) | 1985-12-13 |
| DK577985A DK577985A (en) | 1986-06-15 |
| DK166470B1 true DK166470B1 (en) | 1993-05-24 |
Family
ID=26472546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK577985A DK166470B1 (en) | 1984-12-14 | 1985-12-13 | REDUCING VALVE |
Country Status (24)
| Country | Link |
|---|---|
| KR (1) | KR920006359Y1 (en) |
| CN (1) | CN1004024B (en) |
| AT (1) | AT392546B (en) |
| AU (1) | AU5047785A (en) |
| BE (1) | BE903840A (en) |
| BR (1) | BR8506254A (en) |
| CA (1) | CA1270721A (en) |
| CH (1) | CH668628A5 (en) |
| DE (1) | DE3544177A1 (en) |
| DK (1) | DK166470B1 (en) |
| ES (1) | ES8700403A1 (en) |
| FI (1) | FI79395C (en) |
| FR (1) | FR2574896B1 (en) |
| GB (1) | GB2168504B (en) |
| GR (1) | GR853007B (en) |
| IT (2) | IT8554189V0 (en) |
| LU (1) | LU86199A1 (en) |
| MX (1) | MX161859A (en) |
| NL (1) | NL188712C (en) |
| NO (1) | NO159554C (en) |
| NZ (1) | NZ214483A (en) |
| PH (1) | PH23609A (en) |
| PT (1) | PT81635B (en) |
| SE (1) | SE461933B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE452643B (en) * | 1985-07-01 | 1987-12-07 | Forsheda Ab | Rotary piston for control of material flow to a spray nozzle |
| CN1005588B (en) * | 1985-10-30 | 1989-10-25 | Tlv有限公司 | `Reducing valve |
| JPS6331415U (en) * | 1986-08-12 | 1988-03-01 | ||
| ES2204226B1 (en) * | 2001-04-16 | 2005-07-16 | Hidroconta, S.A. | VALVE GOVERNMENT PILOT WITH MEMBRANE OR PISTON CLOSURE. |
| DE102005024709A1 (en) * | 2005-05-30 | 2006-12-21 | Robert Bosch Gmbh | Pressure control valve device |
| JP5475716B2 (en) * | 2011-04-27 | 2014-04-16 | 株式会社コガネイ | Internal pilot pressure reducing valve |
| CN103430118B (en) * | 2011-05-17 | 2016-01-13 | 株式会社小金井 | Piloted reducer |
| CN103644307A (en) * | 2013-12-07 | 2014-03-19 | 四川锦宇化机有限公司 | High-temperature and high-pressure temperature and pressure reducing valve |
| CN103697207A (en) * | 2013-12-27 | 2014-04-02 | 李潘宝 | Pilot-operated pressure regulating valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE125906C (en) * | ||||
| GB622556A (en) * | 1947-03-26 | 1949-05-04 | British Oxygen Co Ltd | Improvements in or relating to pressure reducing valves |
| DE898238C (en) * | 1951-09-14 | 1953-11-30 | Philips Nv | Hot gas piston machine |
| GB1020332A (en) * | 1962-04-14 | 1966-02-16 | Yazaki Meter Co Ltd | A flow meter for propane or the like gas with a safety device combined therewith |
| DE1252487B (en) * | 1963-07-27 | |||
| US3348573A (en) * | 1965-04-19 | 1967-10-24 | Grove Valve & Regulator Co | Fluid pressure regulator having a guided pressure responsive member |
| CA884121A (en) * | 1968-08-02 | 1971-10-26 | Texaco Canada Limited | Safety valve |
| CA922752A (en) * | 1969-05-22 | 1973-03-13 | Sievenpiper Ward | Seal ring |
| DE2308150A1 (en) * | 1972-07-12 | 1974-01-24 | Ato Inc | MULTI-PART SEALING RING SYSTEM |
| US4206930A (en) * | 1977-05-31 | 1980-06-10 | Chemprene, Inc. | Circumferentially compressed piston ring assembly and method |
| US4522230A (en) * | 1983-02-23 | 1985-06-11 | Rockwell International Corporation | Orifice plate seal ring for controlled closure check valve |
| NZ209289A (en) * | 1983-10-27 | 1987-03-31 | Tlv Co Ltd | Gas pressure reducing valve with liquid separator |
-
1985
- 1985-11-20 GB GB08528556A patent/GB2168504B/en not_active Expired
- 1985-11-21 PH PH33074A patent/PH23609A/en unknown
- 1985-11-28 MX MX85771A patent/MX161859A/en unknown
- 1985-11-28 AU AU50477/85A patent/AU5047785A/en not_active Abandoned
- 1985-12-05 FR FR858518023A patent/FR2574896B1/en not_active Expired
- 1985-12-07 CN CN85108998.4A patent/CN1004024B/en not_active Expired
- 1985-12-09 CH CH5249/85A patent/CH668628A5/en not_active IP Right Cessation
- 1985-12-09 FI FI854841A patent/FI79395C/en not_active IP Right Cessation
- 1985-12-09 NZ NZ214483A patent/NZ214483A/en unknown
- 1985-12-10 IT IT8554189U patent/IT8554189V0/en unknown
- 1985-12-10 KR KR2019850016500U patent/KR920006359Y1/en not_active IP Right Cessation
- 1985-12-10 IT IT8568032A patent/IT1215168B/en active
- 1985-12-10 PT PT81635A patent/PT81635B/en not_active IP Right Cessation
- 1985-12-11 LU LU86199A patent/LU86199A1/en unknown
- 1985-12-12 GR GR853007A patent/GR853007B/el not_active IP Right Cessation
- 1985-12-12 SE SE8505883A patent/SE461933B/en not_active IP Right Cessation
- 1985-12-12 AT AT3595/85A patent/AT392546B/en not_active IP Right Cessation
- 1985-12-12 BE BE0/215998A patent/BE903840A/en not_active IP Right Cessation
- 1985-12-13 BR BR8506254A patent/BR8506254A/en not_active IP Right Cessation
- 1985-12-13 DK DK577985A patent/DK166470B1/en not_active IP Right Cessation
- 1985-12-13 ES ES85549898A patent/ES8700403A1/en not_active Expired
- 1985-12-13 NO NO85855032A patent/NO159554C/en not_active IP Right Cessation
- 1985-12-13 DE DE19853544177 patent/DE3544177A1/en active Granted
- 1985-12-13 CA CA000497564A patent/CA1270721A/en not_active Expired - Lifetime
- 1985-12-13 NL NLAANVRAGE8503446,A patent/NL188712C/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |
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