SE438544C - VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM - Google Patents

VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM

Info

Publication number
SE438544C
SE438544C SE8106882A SE8106882A SE438544C SE 438544 C SE438544 C SE 438544C SE 8106882 A SE8106882 A SE 8106882A SE 8106882 A SE8106882 A SE 8106882A SE 438544 C SE438544 C SE 438544C
Authority
SE
Sweden
Prior art keywords
valve
pressure fluid
port
outlet port
valve housing
Prior art date
Application number
SE8106882A
Other languages
Swedish (sv)
Other versions
SE438544B (en
SE8106882L (en
Inventor
P C Blomqvist
Original Assignee
Atlas Copco Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlas Copco Ab filed Critical Atlas Copco Ab
Priority to SE8106882A priority Critical patent/SE438544C/en
Priority to EP82850179A priority patent/EP0080441A3/en
Publication of SE8106882L publication Critical patent/SE8106882L/en
Publication of SE438544B publication Critical patent/SE438544B/en
Publication of SE438544C publication Critical patent/SE438544C/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/068—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam with valves for gradually putting pneumatic systems under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/455—Control of flow in the feed line, i.e. meter-in control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Driven Valves (AREA)

Description

3106882-7 10 15 20 25 30 35 2 rörlighet såsom definierat i bifogade krav. 3106882-7 10 15 20 25 30 35 2 mobility as defined in the appended claims.

En utföringsform av uppfinningen beskrivs nedan med hänvisning till bifogade ritning på vilken fig. 1 visar ett snitt genom en ventilanordning enligt uppfinningen.An embodiment of the invention is described below with reference to the accompanying drawing, in which Fig. 1 shows a section through a valve device according to the invention.

Fig. 2 visar ett snitt enligt 2-2 i fig. 1. Fig. 3.är en schematisk representation av ventilanordningen.Fig. 2 shows a section according to 2-2 in Fig. 1. Fig. 3 is a schematic representation of the valve device.

Ventilanordningen 40 som visas på ritningen innefattar ett ventilhus 1 som har en inloppsport 5 och en utlopps- port 6. Inloppsporten 5 är förbunden med en tryckfluidum- källa 34 och utloppsporten 6 med ett tryckfluidumsystem 35. En första ventilkropp 11 försedd med en ringformig tät- ning 13 och förbunden med en kolv 12 är rörlig i en borrning i ventilhuset 1 för att styra fluidumförbindelsen mellan inloppsporten och utloppsporten via kanalen 17. Ventilhuset 1 är dessutom försett med en mutter 2 i vilken en dräner- ingsport ] är anordnad. En andra ventilkropp 9 som har en ringformig tätning 14 styr flödesförbindelsen mellan utlopps- porten 6 och dräneringsporten 7. Ventilkroppen 9 är förbunden med en stång 10 som är koakiell med och glidbart upptagen i kolven 12. En kolv 8 är förbunden med den andra änden av stången 10. Borrningen täcks av en tätning 4 och en platta 3. En fjäder 15 belastar den första ventilkroppen 11 mot stängt läge. Fjädern 16 belastar den andra ventil- kroppen 9 mot öppet läge. En pilotventil 28 är anordnad i en borrning 27 i ventilhuset 1. Borrningen 27 är i flödesförbindelse med inloppsöppningen 5. Ventilhuset 1 är dessutom försett med en borrning 24 i vilken en juster- bar skruv 25 är rörlig för att justera en ringformig begränsning 26. Pilotventilen 28 styr flödesförbindelsen mellan inloppsporten 5 och en kanal 30. Kanalen 30 slutar i en öppning 20 i kammaren 22. Kammaren 22 är via en kanal 21 förbunden med utloppsporten 6. Inloppsporten 5 kan också via kanalen 19 och porten 33 anslutas till en ventil 36, fig. 3. Ventilen 36 är via förbindelsen 32 och hålet 31 I 10 15 20 25 30 35 8106882-7 3 förbunden med övre sidan på pilotventilen 28. Det finns också en slits 18 i tätningen 4 mellan hålet 31 och kammaren 23. Ventilen 36 är dessutom förbunden med tryck- fluidumkällan 34 via porten 33.The valve device 40 shown in the drawing comprises a valve housing 1 having an inlet port 5 and an outlet port 6. The inlet port 5 is connected to a pressure fluid source 34 and the outlet port 6 to a pressure fluid system 35. A first valve body 11 provided with an annular sealing 13 and connected to a piston 12 is movable in a bore in the valve housing 1 to control the fluid connection between the inlet port and the outlet port via the channel 17. The valve housing 1 is further provided with a nut 2 in which a drainage port] is arranged. A second valve body 9 having an annular seal 14 controls the flow connection between the outlet port 6 and the drainage port 7. The valve body 9 is connected to a rod 10 which is coaxial with and slidably received in the piston 12. A piston 8 is connected to the other end of the rod 10. The bore is covered by a seal 4 and a plate 3. A spring 15 loads the first valve body 11 against the closed position. The spring 16 loads the second valve body 9 against the open position. A pilot valve 28 is arranged in a bore 27 in the valve housing 1. The bore 27 is in flow communication with the inlet opening 5. The valve housing 1 is further provided with a bore 24 in which an adjustable screw 25 is movable to adjust an annular restriction 26. The pilot valve 28 controls the flow connection between the inlet port 5 and a channel 30. The channel 30 ends in an opening 20 in the chamber 22. The chamber 22 is connected to the outlet port 6 via a channel 21. The inlet port 5 can also be connected to a valve 36 via the channel 19 and the port 33. Fig. 3. The valve 36 is connected via the connection 32 and the hole 31 to the upper side of the pilot valve 28. There is also a slot 18 in the seal 4 between the hole 31 and the chamber 23. The valve 36 is also connected to the pressure fluid source 34 via the port 33.

Den visade ventilanordningen 40 fungerar på följande sätt. Ventilen 36 förs till läget motsatt det i fig. 3 visade. Tryckfluidum tillförs därefter till övre änden av pilotventilen 28 och till kammaren 23 ovanför kolven 8.The valve device 40 shown operates in the following manner. The valve 36 is moved to the position opposite to that shown in Fig. 3. Pressure fluid is then supplied to the upper end of the pilot valve 28 and to the chamber 23 above the piston 8.

Kolven 8 trycks nedåt så att den andra ventilkroppen 9 stänger förbindelsen mellan utloppsporten 6 och dränerings- porten 7. Samtidigt öppnar pilotventilen 28 en flödes- förbindelse vid 29 så att tryckfluidum förs från inlopps- porten 5 via kanalen 19, strypningen 26, flödesförbindel- sen 29, kanalen 30, kammaren 22 och kanalen 21 till utloppsporten 6. Tryckfluidet förs således med begränsad hastighet till tryckfluidumsystemet 35. När trycket i kammaren 22 har stigit till en förutbestämd nivå, som beror på fjäderkrafterna och tryckkrafterna, trycks kolven 12 nedåt så att den första ventilkroppen 11 öpp- nar en fullkapacitetsflödesförbindelse mellan inlopps- porten 5 och utloppsporten 6. Den höga flödeskapaciteten uppnådd på detta sätt p.g.a. den korta och direkta kanalen mellan inlopp och utlopp ökas dessutom något p.g.a. det parallella anordnandet av strypningen 26 och pilotventilen 28.The piston 8 is pushed downwards so that the second valve body 9 closes the connection between the outlet port 6 and the drainage port 7. At the same time the pilot valve 28 opens a flow connection at 29 so that pressure fluid is carried from the inlet port 5 via the channel 19, the choke 26, the flow connection 29, the duct 30, the chamber 22 and the duct 21 to the outlet port 6. The pressure fluid is thus conveyed at a limited speed to the pressure fluid system 35. When the pressure in the chamber 22 has risen to a predetermined level, which depends on the spring forces and pressure forces, the piston 12 is pushed down the first valve body 11 opens a full capacity flow connection between the inlet port 5 and the outlet port 6. The high flow capacity achieved in this way due to the short and direct channel between inlet and outlet is also increased slightly due to the parallel arrangement of the throttle 26 and the pilot valve 28.

När ventilen 36 återförs till läget som visas i fig. 3 avluftas övre änden på pilotventilen 28 och kammaren 23.When the valve 36 is returned to the position shown in Fig. 3, the upper end of the pilot valve 28 and the chamber 23 are vented.

Pilotventilen 28 stänger och kolven 8 skjuts uppåt så att den första ventilkroppen 11 stänger flödes- förbindelsen mellan inloppsporten 5 och utloppsporten 6.The pilot valve 28 closes and the piston 8 is pushed upwards so that the first valve body 11 closes the flow connection between the inlet port 5 and the outlet port 6.

Tryckfluidumsystemet avluftas genom dräneringsporten 7.The pressure fluid system is vented through the drain port 7.

Claims (1)

1. Patentkrav: Ventilanordning för styrd trycksättning av ett tryckfluidumsystem (35) innefattande ett ventilhus (1), en inloppsport (5) i ventil- huset för tillförsel av tryckfluidum från en tryckfluidumkälla (34), en utloppsport (6) i ventilhuset i förbindelse med sagda tryckfluidumsystem och en första ventilkropp (11) rörlig i ventil- huset för att styra en tryckfluidumförbindelse mellan sagda inlopps- port och sagda utloppsport, k ä n n e t e c k n a d d ä r a v att sagda första ventilkropp (ll) är förbunden med en kolv (12) som är glidbar i ventilhuset (1), att en kanal (21) är anordnad mellan utloppsporten (6) och en kammare (22) i ventilhuset, att sagda kolv sträcker sig in i sagda kammare sa att trycket i utloppsporten belastar sagda kolv i sagda första ventilkropps (ll) öppningsriktning mot verkan av en fjäder.(15), att en andra ventilkropp (9) som är koaxiell med sagda första ventilkropp är anordnad att styra en förbindelse mellan sagda utlopps- port (6) och en dräneringsport (7), att en strypt förbindelse (26,30) är anordnad i ventilhuset (1) mellan sagda inloppsport (5) och sagda kanmare (22), att en pilotventil (28) är anordnad i sagda strypta förbindelse, varvid pilotventilen är omställbar mellan ett stängt läge och ett läge för tillförsel av tryckfluidum från sagda inloppsport (5) till sagda kammare (22).A valve device: Valve device for controlled pressurization of a pressure fluid system (35) comprising a valve housing (1), an inlet port (5) in the valve housing for supplying pressure fluid from a pressure fluid source (34), an outlet port (6) in the valve housing in connection with said pressure fluid system and a first valve body (11) movable in the valve housing for controlling a pressure fluid connection between said inlet port and said outlet port, characterized in that said first valve body (II) is connected to a piston (12) which is slidable in the valve housing (1), that a channel (21) is arranged between the outlet port (6) and a chamber (22) in the valve housing, that said piston extends into said chamber so that the pressure in the outlet port loads said piston in said first (15), that a second valve body (9) coaxial with said first valve body is arranged to control a connection between said outlet port (6) and a drainage port. (7), that a throttled connection (26, 30) is arranged in the valve housing (1) between said inlet port (5) and said cam (22), that a pilot valve (28) is arranged in said throttled connection, the pilot valve being adjustable between a closed position and a position for supplying pressure fluid from said inlet port (5) to said chamber (22).
SE8106882A 1981-11-19 1981-11-19 VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM SE438544C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8106882A SE438544C (en) 1981-11-19 1981-11-19 VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM
EP82850179A EP0080441A3 (en) 1981-11-19 1982-09-10 Valve device for controlled pressurization of a pressure fluid system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8106882A SE438544C (en) 1981-11-19 1981-11-19 VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM

Publications (3)

Publication Number Publication Date
SE8106882L SE8106882L (en) 1983-05-20
SE438544B SE438544B (en) 1985-04-22
SE438544C true SE438544C (en) 1989-05-08

Family

ID=20345069

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8106882A SE438544C (en) 1981-11-19 1981-11-19 VALVE DEVICE FOR CONTROLLED PRESSURE SETTING OF A PRESSURE FLUID SYSTEM

Country Status (2)

Country Link
EP (1) EP0080441A3 (en)
SE (1) SE438544C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582749B1 (en) * 1985-05-31 1989-09-01 Levenez Yves STARTER-CONNECTION FOR THE PROGRESSIVE PRESSURE OF PNEUMATIC INSTALLATIONS
US5067519A (en) * 1990-11-26 1991-11-26 Ross Operating Valve Company Safety valve for fluid systems
DE19649920A1 (en) * 1996-12-02 1998-06-04 Press Controls Ruemlang Ag Start valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1448634A (en) * 1965-09-30 1966-08-05 Hoerbiger Ventilwerke Ag Automatic device for discharging a pressurized fluid
FR1560382A (en) * 1967-12-22 1969-03-21
DE1680082B2 (en) * 1968-03-01 1973-04-12 Graubremse Gmbh, 6900 Heidelberg PRESSURE REDUCER UPSTANDING THE SINGLE AND TWO-LINE CONTROL VALVE IN A COMPRESSED AIR BRAKE SYSTEM FOR TRAILER VEHICLES
DE2059959A1 (en) * 1969-12-19 1971-06-24 Hoerbiger Ventilwerke Ag Automatic relief device
FR2474612A1 (en) * 1980-01-25 1981-07-31 Valdenaire Maurice Progressive feed and instant exhaust valve - has air jet and full flow ports to direct air flow via pilot and ball valve

Also Published As

Publication number Publication date
EP0080441A2 (en) 1983-06-01
SE438544B (en) 1985-04-22
EP0080441A3 (en) 1984-03-21
SE8106882L (en) 1983-05-20

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