US3680832A - Closure device for streaming media, in particular high pressure liquids - Google Patents

Closure device for streaming media, in particular high pressure liquids Download PDF

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US3680832A
US3680832A US19866A US3680832DA US3680832A US 3680832 A US3680832 A US 3680832A US 19866 A US19866 A US 19866A US 3680832D A US3680832D A US 3680832DA US 3680832 A US3680832 A US 3680832A
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piston
casing
medium
high pressure
tube
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US19866A
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Sandor Uliczky
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Nikex Nehezipari Kulkereskedelmi Vallalat
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Nikex Nehezipari Kulkereskedelmi Vallalat
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    • 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

Definitions

  • ABSTRACT Klinksiek Attorney-Young & Thompson [5 7] ABSTRACT It is known to construct a closure means for high pressure fluids in such a way that the forces acting on it compensate each other. According to the invention such a closure means is improved in such a way that it can be removed from the path of the closure means, in order to allow a free streaming of the fluid. For this purpose the closure means is either moved in the in terior of the casing, or it surrounds the casing like a sleeve.
  • the invention relates to a closure device for streaming media, in particular for liquids under high pressure.
  • valves, slides or other closing means When these closing means are pressed against their seat by the pressure of the medium, very substantial forces are required for opening.
  • closure means are known in which the pressure of the medium acts on the cylindrical closure device radially and in all directions, so that the forces compensate each .other. It is moreover known to relieve the closure means in such a manner that essentially equal forces act on the closure means in axially opposed directions, so that pressure is relieved, and accordingly closure and opening can be efiected without any difficulty.
  • the closure means checks the flow of the streaming medium a fact, which is disadvantageous, because streaming of the medium is impeded and eddies are produced.
  • the invention therefore provides a closure member which is so designed as to be removable from the way of the streamingmedium in a relieved states. This can be-realized in two different manners.
  • the closure member is disposed in the interior of the casing of the closure device, and is removed from the path of the streaming medium by being shifted within the casing.
  • the closure member surrounds the tube carrying the medium in tubular form, the medium streams 387/80 alL/Kn through the clearance or space between the two tubes, and the removal of the closure member from the path of the medium takes place upon opening in this clearance or interspace.
  • FIGS. 1 to 3 Three exemplified embodiments of the first described solution are shown in schematical section in FIGS. 1 to 3, whereas FIG. 4 represents an embodiment of the last mentioned variant of the device according to the invention, also in schematical section.
  • the medium e.g. high pressure liquid streams into channel 3,in casing l, and is discharged from said casing through channel 4.
  • said streaming is impossible, since the space between the two channels is closed by the piston 2 by means of the sealing rings 7 and 8Piston 2 is joined to a piston 6 of larger diameter, which is also shifted in a sealed state in the appropriate bore of the casing, by means of the sealing ring 9.
  • a piston rod joins the pistons, and protrudes from the casing at one of its ends.
  • the casing is closed by a lid 10.
  • the inlet channel 3 is connected by a bore 12 with the cylindrical space 15 on the side of piston 6 which is opposite piston 2 in such a manner that said bore 12 opens out into a recess 13 in the lid 10.
  • the high pressure will act on that front surface of the piston 2 which is represented on the left hand side of the drawing, as well as on the right hand side annular surface of the piston 6 which is of like area as the aforementioned surface.
  • the pistons are accordingly relieved.
  • FIG. 2 differs from the above described solution mainly in that as a result of the slantwise arrangement of the closure device there is no need for the medium to flow in an S-shaped path, as in the first described device.
  • the piston 2a can be pressed into a sealing ring 8a, disposed in tube 16, by means of piston 5, whereas in the open position the piston departs from the sealing ring and from the path of the streaming medium.
  • the bore 12a serving for relief is not arranged in the casing but in the piston.
  • the closing member consists of a hollow piston 2b, which is tubular and consists of two parts of smaller and larger diameters, respectively, with a shoulder 2 arranged between the two parts for relief.
  • the piston 2b When closing is intended, the piston 2b is shifted in the interior of the casing to the right until it reaches the sealing ring 8b. As soon as the piston is locked in said sealing ring, the streaming of the medium is checked.
  • the shifting of the tubular piston 2b in both directions obviously occurs in a state relieved by the forces acting axially opposed to one another; in the open position there is no closing member to impede the path of the streaming medium.
  • the medium streams in the tubing 19 which is divided in two by a partition 22.
  • the medium will stream across the opening 20 disposed before the partition into a cylindrical envelope 23 surrounding the tubing, i.e. into a space 26, whence it streams back into the tubing 19 through an opening 21.
  • the envelope 23 is shifted to the left, and'meanwhile the envelope is displaced with sealing on the outer surface of the tubing.
  • the sealing ring in the new row part of the envelope 24 slides onto the collar or flange 25 of the tube 19, thus checking the flow of the medium in this part.
  • the same effect is achieved, if the sealing ring is disposed on the external part of the collar 25, instead of the interior of the narrow part 24.
  • the sealing In order to permit closure, the sealing must naturally be effected by all means between the two openings 20 and 21, thus essentially in the place where the tube is closed up by the partition 22. In both cases the tapering part 24 acts as closing member, which moves away from the path of the flowing medium upon opening.
  • the opening 21 has a non-circular shape, widening in the direction of the flow. This shape has the effect that when the envelope 23 is shifted but slightly after closure from its closed position, streaming starts with substantial throttling and is gradually increased with further shifting of the envelope.
  • a closure device in particular for high pressure streaming media, comprising a casing, a piston mounted for sliding movement in the casing between open and closed positions in which the piston respectively opens and closes the casing to the flow of a said medium therethrough, the piston having a relatively small diameter cylindrical forward portion and a relatively large diameter rear portion, a pair of packing rings in the casing into which the relatively small diameter portion of the piston is slidable and one of which seals with the piston only in said closed position and the other of which seals with the piston in both of said positions of the piston, a third packing ring with which the relatively large diameter portion of the piston seals in both of said positions of the piston, and means to equalize the pressure on opposite sides of the piston.
  • a device as claimed in claim 1 said piston having a rod that extends through the casing and that is connected to said relatively large diameter rear portion of the piston.
  • a device as claimed in claim 1 and a tube through which said medium flows into the casing, said piston surrounding said tube, said third packing ring sealing between the piston and the tube.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

It is known to construct a closure means for high pressure fluids in such a way that the forces acting on it compensate each other. According to the invention such a closure means is improved in such a way that it can be removed from the path of the closure means, in order to allow a free streaming of the fluid. For this purpose the closure means is either moved in the interior of the casing, or it surrounds the casing like a sleeve.

Description

United States Patent Uliczky [151 3,680,832 51 Aug. 1,1972
[54] CLOSURE DEVICEFOR STREAMING MEDIA, IN PARTICULAR HIGH PRESSURE LIQUIDS [72] Inventor: Sandor Ullczky, Budapest, Hungary [73] Assignee: Nikex Nehezipari Kulkereskedelmi Vallalat, Budapest, Hungary [22] Filed: March 16, 1970 [21] Appl. No.: 19,866
[30] Foreign Application Priority Data March 20, 1969 Hungary ..Ul-l40 [52] 11.8. CI. ..251/282 [51] Int. Cl ..Fl6k 39/04 [58] Field of Search ..25 l/343, 282, 344; 137/625.68
[56] References Cited UNITED STATES PATENTS 2,854,018 9/1958 Kilmarx ..25 l/343 X 3,189,048 6/1965 Parker et a1 ..251/282 X 2,505,410 4/1950 Klaas ..137/625.68 3,010,695 11/1961 Banks ..251/282 X 3,485,263 12/1969 Laux ..251/344 X FOREIGN PATENTS OR APPLICATIONS 154,597 8/1932 Switzerland ..251/282 Primary Examiner-Henry T. Klinksiek Attorney-Young & Thompson [5 7] ABSTRACT It is known to construct a closure means for high pressure fluids in such a way that the forces acting on it compensate each other. According to the invention such a closure means is improved in such a way that it can be removed from the path of the closure means, in order to allow a free streaming of the fluid. For this purpose the closure means is either moved in the in terior of the casing, or it surrounds the casing like a sleeve.
3 Claims, 4 Drawing Figures 2/ //IIIIIIIIIIII PATENTEDAUG H 12 3.680.832
SHEET 1 OF 2 Fig. 1
INVENTOR BY F PATENTEDAUB 1 I972 3.680.832
sum 2 or 2 INVENTOR CLOSURE DEVICE FOR STREAMING MEDIA, IN PARTICULAR HIGH PRESSURE LIQUIDS The invention relates to a closure device for streaming media, in particular for liquids under high pressure.
ln'order to close the flow of streaming media, i.e. liquids and gases, it is usual to employ valves, slides or other closing means. When these closing means are pressed against their seat by the pressure of the medium, very substantial forces are required for opening. In order to eliminatethis, closure means are known in which the pressure of the medium acts on the cylindrical closure device radially and in all directions, so that the forces compensate each .other. It is moreover known to relieve the closure means in such a manner that essentially equal forces act on the closure means in axially opposed directions, so that pressure is relieved, and accordingly closure and opening can be efiected without any difficulty.
ln these conventional devices, however, the closure means checks the flow of the streaming medium a fact, which is disadvantageous, because streaming of the medium is impeded and eddies are produced.
it is the object of the invention to eliminate this shortcoming. The invention therefore provides a closure member which is so designed as to be removable from the way of the streamingmedium in a relieved states. This can be-realized in two different manners. In one embodiment the closure member is disposed in the interior of the casing of the closure device, and is removed from the path of the streaming medium by being shifted within the casing. ln the other embodiment the closure member surrounds the tube carrying the medium in tubular form, the medium streams 387/80 alL/Kn through the clearance or space between the two tubes, and the removal of the closure member from the path of the medium takes place upon opening in this clearance or interspace.
Three exemplified embodiments of the first described solution are shown in schematical section in FIGS. 1 to 3, whereas FIG. 4 represents an embodiment of the last mentioned variant of the device according to the invention, also in schematical section.
In FIG. 1 the medium, e.g. high pressure liquid streams into channel 3,in casing l, and is discharged from said casing through channel 4. In the closed position as represented in the drawing, said streaming is impossible, since the space between the two channels is closed by the piston 2 by means of the sealing rings 7 and 8Piston 2 is joined to a piston 6 of larger diameter, which is also shifted in a sealed state in the appropriate bore of the casing, by means of the sealing ring 9. A piston rod joins the pistons, and protrudes from the casing at one of its ends. The casing is closed by a lid 10.
Between the two sealing rings 7 and 8 there is in the casing a cylindrical space 11. The space between seal.- ing rings 7 and 9 communicates with the atmosphere by means of a bore 14, i.e. an opening serving for ventilation and lubrication.
The inlet channel 3 is connected by a bore 12 with the cylindrical space 15 on the side of piston 6 which is opposite piston 2 in such a manner that said bore 12 opens out into a recess 13 in the lid 10. In this manner the high pressure will act on that front surface of the piston 2 which is represented on the left hand side of the drawing, as well as on the right hand side annular surface of the piston 6 which is of like area as the aforementioned surface. The pistons are accordingly relieved.
If the system of pistons is drawn to the right, the piston 2 leaves the sealing ring 8. Accordingly, streaming can begin and there is no obstacle in the way of shifting the moving parts rightward, to such an extent, that piston 6 shall come quite close to lid 10. The piston 2 will thus be removed from the path of streaming by means of being displaced in the interior of the casing.
The embodiment shown in FIG. 2 differs from the above described solution mainly in that as a result of the slantwise arrangement of the closure device there is no need for the medium to flow in an S-shaped path, as in the first described device. In this embodiment the piston 2a can be pressed into a sealing ring 8a, disposed in tube 16, by means of piston 5, whereas in the open position the piston departs from the sealing ring and from the path of the streaming medium. In this embodiment the bore 12a serving for relief is not arranged in the casing but in the piston.
According to FIG. 3 the closing member consists of a hollow piston 2b, which is tubular and consists of two parts of smaller and larger diameters, respectively, with a shoulder 2 arranged between the two parts for relief. A tube 17, carrying the medium, ends in the casing lb, with openings 18 disposed near the extremity of said tube, so that in the represented open position the medium passes through the openings into the channel 4b and is discharged through said channel from the casing.
When closing is intended, the piston 2b is shifted in the interior of the casing to the right until it reaches the sealing ring 8b. As soon as the piston is locked in said sealing ring, the streaming of the medium is checked. The shifting of the tubular piston 2b in both directions obviously occurs in a state relieved by the forces acting axially opposed to one another; in the open position there is no closing member to impede the path of the streaming medium.
In the embodiment shown in FIG. 4 the medium streams in the tubing 19 which is divided in two by a partition 22. The medium will stream across the opening 20 disposed before the partition into a cylindrical envelope 23 surrounding the tubing, i.e. into a space 26, whence it streams back into the tubing 19 through an opening 21. For closure the envelope 23 is shifted to the left, and'meanwhile the envelope is displaced with sealing on the outer surface of the tubing. As a result of the displacement to the left, the sealing ring in the new row part of the envelope 24 slides onto the collar or flange 25 of the tube 19, thus checking the flow of the medium in this part. The same effect is achieved, if the sealing ring is disposed on the external part of the collar 25, instead of the interior of the narrow part 24.
In order to permit closure, the sealing must naturally be effected by all means between the two openings 20 and 21, thus essentially in the place where the tube is closed up by the partition 22. In both cases the tapering part 24 acts as closing member, which moves away from the path of the flowing medium upon opening.
The opening 21 has a non-circular shape, widening in the direction of the flow. This shape has the effect that when the envelope 23 is shifted but slightly after closure from its closed position, streaming starts with substantial throttling and is gradually increased with further shifting of the envelope.
What we claim is:
l. A closure device, in particular for high pressure streaming media, comprising a casing, a piston mounted for sliding movement in the casing between open and closed positions in which the piston respectively opens and closes the casing to the flow of a said medium therethrough, the piston having a relatively small diameter cylindrical forward portion and a relatively large diameter rear portion, a pair of packing rings in the casing into which the relatively small diameter portion of the piston is slidable and one of which seals with the piston only in said closed position and the other of which seals with the piston in both of said positions of the piston, a third packing ring with which the relatively large diameter portion of the piston seals in both of said positions of the piston, and means to equalize the pressure on opposite sides of the piston.
2. A device as claimed in claim 1, said piston having a rod that extends through the casing and that is connected to said relatively large diameter rear portion of the piston.
3. A device as claimed in claim 1, and a tube through which said medium flows into the casing, said piston surrounding said tube, said third packing ring sealing between the piston and the tube.

Claims (3)

1. A closure device, in particular for high pressure streaming media, comprising a casing, a piston mounted for sliding movement in the casing between open and closed positions in which the piston respectively opens and closes the casing to the flow of a said medium therethrough, the piston having a relatively small diameter cylindrical forward portion and a relatively large diameter rear portion, a pair of packing rings in the casing into which the relatively small diameter portion of the piston is slidable and one of which seals with the piston only in said closed position and the other of which seals with the piston in both of said positions of the piston, a third packing ring with which the relatively large diameter portion of the piston seals in both of said positions of the piston, and means to equalize the pressure on opposite sides of the piston.
2. A device as claimed in claim 1, said piston having a rod that extends through the casing and that is connected to said relatively large diameter rear portion of the piston.
3. A device as claimed in claim 1, and a tube through which said medium flows into the casing, said piston surrounding said tube, said third packing ring sealing between the piston and the tube.
US19866A 1969-03-20 1970-03-16 Closure device for streaming media, in particular high pressure liquids Expired - Lifetime US3680832A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937247A (en) * 1974-01-23 1976-02-10 Wal Jurjen V D Valve for fluids containing abrasive particles
US4190231A (en) * 1974-05-21 1980-02-26 Ettore Vimercati Bilaterally balanced fluid control valve
DE3012453A1 (en) * 1980-03-31 1981-10-08 Lothar 7012 Fellbach Groß Liquid or gas gate valve - has stepped piston and bore forming three chambers sealed from each other
US4477056A (en) * 1983-02-28 1984-10-16 Martin Marietta Corporation High force-gain valve
US4653723A (en) * 1984-07-25 1987-03-31 Klockner-Humboldt-Deutz Aktiengesellschaft Control valve for a fuel injector
US4809746A (en) * 1985-08-10 1989-03-07 Mannesmann Rexroth Gmbh Proportional throttle valve
WO2001020209A1 (en) * 1999-09-16 2001-03-22 Danfoss A/S Valve, especially radiator valve
US20180023722A1 (en) * 2016-07-22 2018-01-25 Hyundai Motor Company Fuel supply valve for fuel cell system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2521928C2 (en) * 1975-05-16 1985-01-03 George D. Santa Paula Calif. Hudson Pilot operated float valve
US4029293A (en) * 1975-09-04 1977-06-14 Deere & Company Control valve
DE3272514D1 (en) * 1982-03-19 1986-09-18 Bachofen Ag Installation for supplying movable consumers with a pressurized fluid
JPS61153075A (en) * 1984-12-26 1986-07-11 Nippon Denso Co Ltd Rotary-valve switching device
DE3628736C1 (en) * 1986-08-23 1987-06-25 Klinger Ag Shut-off valve
US4928920A (en) * 1989-05-18 1990-05-29 Laminar Fluid Controls, Inc. Finely-adjustable flow control valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154597A (en) * 1930-06-07 1932-05-15 Irma Ind En Ruwmaterialen Mij Gate valve for gases and liquids.
US2505410A (en) * 1945-01-09 1950-04-25 Braun & Co C F Valve
US2854018A (en) * 1954-10-05 1958-09-30 Scovill Manufacturing Co Quick-dump extension for airplane tire valve
US3010695A (en) * 1959-02-13 1961-11-28 George W Banks High pressure low torque valve with characterized flow control
US3189048A (en) * 1962-01-12 1965-06-15 Stephen C Peplin Balanced mixing valve
US3485263A (en) * 1964-05-16 1969-12-23 Karl Laux Pulse valve,particularly for sprinkler plants

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154597A (en) * 1930-06-07 1932-05-15 Irma Ind En Ruwmaterialen Mij Gate valve for gases and liquids.
US2505410A (en) * 1945-01-09 1950-04-25 Braun & Co C F Valve
US2854018A (en) * 1954-10-05 1958-09-30 Scovill Manufacturing Co Quick-dump extension for airplane tire valve
US3010695A (en) * 1959-02-13 1961-11-28 George W Banks High pressure low torque valve with characterized flow control
US3189048A (en) * 1962-01-12 1965-06-15 Stephen C Peplin Balanced mixing valve
US3485263A (en) * 1964-05-16 1969-12-23 Karl Laux Pulse valve,particularly for sprinkler plants

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937247A (en) * 1974-01-23 1976-02-10 Wal Jurjen V D Valve for fluids containing abrasive particles
US4190231A (en) * 1974-05-21 1980-02-26 Ettore Vimercati Bilaterally balanced fluid control valve
DE3012453A1 (en) * 1980-03-31 1981-10-08 Lothar 7012 Fellbach Groß Liquid or gas gate valve - has stepped piston and bore forming three chambers sealed from each other
US4477056A (en) * 1983-02-28 1984-10-16 Martin Marietta Corporation High force-gain valve
US4653723A (en) * 1984-07-25 1987-03-31 Klockner-Humboldt-Deutz Aktiengesellschaft Control valve for a fuel injector
US4757973A (en) * 1984-07-25 1988-07-19 Klockner-Humboldt-Deutz Aktiengesellschaft Control valve for a fuel injector
US4809746A (en) * 1985-08-10 1989-03-07 Mannesmann Rexroth Gmbh Proportional throttle valve
WO2001020209A1 (en) * 1999-09-16 2001-03-22 Danfoss A/S Valve, especially radiator valve
US20180023722A1 (en) * 2016-07-22 2018-01-25 Hyundai Motor Company Fuel supply valve for fuel cell system
US10920900B2 (en) * 2016-07-22 2021-02-16 Hyundai Motor Company Fuel supply valve for fuel cell system

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AT312385B (en) 1973-12-27
FR2037231A1 (en) 1970-12-31
DE2012707A1 (en) 1970-10-01

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