GB767046A - Sealing arrangements including toric seals between axially movable inner and outer cylindrical members - Google Patents
Sealing arrangements including toric seals between axially movable inner and outer cylindrical membersInfo
- Publication number
- GB767046A GB767046A GB19571/54A GB1957154A GB767046A GB 767046 A GB767046 A GB 767046A GB 19571/54 A GB19571/54 A GB 19571/54A GB 1957154 A GB1957154 A GB 1957154A GB 767046 A GB767046 A GB 767046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- pressure
- valve
- piston
- chambers
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
-
- 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
- F16J15/00—Sealings
- F16J15/002—Sealings comprising at least two sealings in succession
- F16J15/004—Sealings comprising at least two sealings in succession forming of recuperation chamber for the leaking fluid
-
- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
-
- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
- F15B2201/312—Sealings therefor, e.g. piston rings
-
- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3157—Sealings for the flexible separating means
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
- F15B2201/413—Liquid ports having multiple liquid ports
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/415—Gas ports
- F15B2201/4155—Gas ports having valve means
Abstract
767,046. Piston and stuffing-box packing. MERCIER, J. July 5, 1954 [July 4, 1953], No. 19571/54. Classes 122 (1) and 122 (5). [Also in Group XXIX] A sealing arrangement between axially movable inner and outer cylindrical members comprises two or more axially spaced sealing rings, at least one of which is an O-ring located in a recess in one of the cylindrical members, a chamber or chambers for leakage fluid in one or the other of the members intermediate said seals, and means to relieve the pressure in said chamber or chambers when it reaches a predetermined amount. A piston 11 operating in a cylinder 10 separates two chambers C<SP>1</SP>, C<SP>2</SP>, and is sealed by two O-rings 14, 15 in grooves 12, 13 in the piston separated by an intermediate chamber C<SP>3</SP>, communicating by a conduit 16 with a supplementary chamber C 4 . The groove 12 communicates with chamber C<SP>1</SP> through conduits 17 and clearance 18 between the piston and cylinder. In normal operation, the pressures P<SP>1</SP> and P<SP>2</SP> in chambers C<SP>1</SP> and C<SP>2</SP> respectively are both greater than the pressure P<SP>3</SP> in chamber C<SP>3</SP> and the O-rings 14, 15 are pressed, by the pressure differentials across them, against the sides of the grooves 12, 13 adjacent chamber C<SP>3</SP>. If the pressure P<SP>3</SP>, exceeds P<SP>1</SP>, due to leakage, the pressure differential is reversed on the O-ring 14 which moves towards the opposite side of the groove 12 and in so doing allows fluid to flow from C<SP>3</SP> to C<SP>1</SP> through conduits 17 and clearance 18, and since P<SP>2</SP> is greater than P<SP>1</SP> the pressure differential on the O-ring 13 is maintained in the same direction. The grooves 12, 13 may be in the cylinder and the groove 12 may have the crosssection shown in Fig. 3 to facilitate the escape of fluid from C<SP>3</SP> to C<SP>1</SP> when P<SP>3</SP> exceeds P<SP>1</SP>. In a modification one of the O-rings is replaced by a flexible lip type packing. In a further modification, three O-rings are used separated by two intermediate chambers. In an hydraulic accumulator. Fig. 7, in which the chambers C<SP>1</SP> and C<SP>2</SP> are connected respectively to the oil system and charged with compressed air and the piston 106 is sealed by two O-rings 107 and 108 separated by chamber C<SP>3</SP>, the pressure in the latter is automatically relieved by a spring-loaded non-return valve 105 communicating with the atmosphere. The chamber C<SP>3</SP> connects with a supplementary chamber C<SP>1</SP>3 filled with foam rubber 110 or other cellular substance. In a modification, Fig. 8 (not shown), the valve 105 is omitted and the supplementary chamber communicates with the chamber C<SP>1</SP> through two spring-loaded non- return valves which respectively allow fluid to pass from C<SP>3</SP> to C<SP>1</SP> and from C<SP>1</SP> to C<SP>3</SP>. In another modification, Fig. 10, the pressure in the chamber C<SP>1</SP>3 is relieved by a valve 170 controlling a passage 171 in the piston end adjacent chamber C<SP>1</SP>, the passage 171 may or may not also be additionally controlled by a spring-loaded ball valve 172. The valve 170 is loaded to open by a spring 173 and to close by the pressure P<SP>2</SP> acting on a head 166 sealingly slidable in a bore in the piston end adjacent the chamber C<SP>2</SP>. In a further modification, Fig. 11, the end of the valve adjacent chamber C<SP>1</SP> is formed as a pump plunger 187 which cooperates with a bore 188 in the piston end which also houses spring-loaded suction and discharge valves 190, 189. According to the Specification, increase in pressure P<SP>3</SP> causes the plunger 187 to move to the right and draw fluid from chamber C<SP>1</SP>3 past the valve 190 into bore 188 with a consequent fall in pressure P<SP>3</SP> resulting in a return movement of the plunger 187 to pump fluid from the bore 188 through the valve 189 into the chamber Cl.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR767046X | 1953-07-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB767046A true GB767046A (en) | 1957-01-30 |
Family
ID=9183666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19571/54A Expired GB767046A (en) | 1953-07-04 | 1954-07-05 | Sealing arrangements including toric seals between axially movable inner and outer cylindrical members |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB767046A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011451A1 (en) * | 1989-03-20 | 1990-10-04 | Allied-Signal Inc. | Pressure-producing device |
US7096774B2 (en) | 2000-11-09 | 2006-08-29 | Avure Technologies Ab | High pressure press, method for operating a high pressure press and use of such a press |
CN109110723A (en) * | 2018-08-21 | 2019-01-01 | 深圳安吉尔饮水产业集团有限公司 | Vacuum cock formula water storage device |
-
1954
- 1954-07-05 GB GB19571/54A patent/GB767046A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990011451A1 (en) * | 1989-03-20 | 1990-10-04 | Allied-Signal Inc. | Pressure-producing device |
US5036887A (en) * | 1989-03-20 | 1991-08-06 | Allied-Signal Inc. | Pressure-producing device |
JP2857249B2 (en) | 1989-03-20 | 1999-02-17 | アライド シグナル インコーポレイテッド | Pressure generator |
US7096774B2 (en) | 2000-11-09 | 2006-08-29 | Avure Technologies Ab | High pressure press, method for operating a high pressure press and use of such a press |
CN109110723A (en) * | 2018-08-21 | 2019-01-01 | 深圳安吉尔饮水产业集团有限公司 | Vacuum cock formula water storage device |
CN109110723B (en) * | 2018-08-21 | 2023-11-14 | 深圳安吉尔饮水产业集团有限公司 | Vacuum piston type water storage device |
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