US3664801A - Apparatus for developing high fluid pressure - Google Patents
Apparatus for developing high fluid pressure Download PDFInfo
- Publication number
- US3664801A US3664801A US38348A US3664801DA US3664801A US 3664801 A US3664801 A US 3664801A US 38348 A US38348 A US 38348A US 3664801D A US3664801D A US 3664801DA US 3664801 A US3664801 A US 3664801A
- Authority
- US
- United States
- Prior art keywords
- chamber
- pressure
- piston
- chambers
- casing
- 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 - Lifetime
Links
- 239000012530 fluid Substances 0.000 title description 22
- 239000000463 material Substances 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 description 12
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
Images
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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/015—Explosive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
Definitions
- This apparatus has the drawback that because of the not inconsiderable compressibility of liquids under high pressure, the apparatus has to be provided with considerable space .for the stroke of the piston. Consequently, the pressure chamber required is considerable and the ratio of effective volume to interior volume of the chamber is less than in the foregoing case.
- the power required for moving the piston can be supplied by a conventional single-action press, jack, low-pressure hydraulic pump, etc.;
- the apparatus is portable and can be used on any commercial press with a suitable stroke.
- the pressurizing apparatus comprises a casing defining first and second intercommunicating chambers extending at right angles to one another, a piston slidably supported in one chamber for pressurizing a fluid contained in the chambers, and means replaceably in said casing for furnishing access to the other of said chambers for insertion therein and removal therefrom of materials to be pressurized.
- the piston has a bore and an inlet for admission of fluid into the chambers, and valve means is provided for closing the inlet.
- a heater means is provided on the casing for supplying heat to the material, if desired, during isostatic compression thereof.
- Sealing means is provided for the chambers and the sealing means is responsive to the pressure of the fluid in the chambers to intensify the sealing of the chambers.
- FIG. 1 is a side elevation view, partly in section, of the compression apparatus according to the invention
- FIG. 2 shows, in section, a portion of the casing of the apparatus of FIG. 1,
- FIG. 3 shows, in section, the piston of the apparatus of FIG. 1, and
- FIG. 4 is a diagrammatic sectional view of a portion of the apparatus of FIG. 1.
- the casing contains two intercommunicating hollow, cylindrical, chambers 2 and 3 extending at right angles to one another.
- the chamber 2 is vertical and slidably receives a piston 4, while the material to be compressed 5 is contained in chamber 3 which is horizontal.
- a sealing member 6 is threadably engaged in the casing toseal the chamber 3 and a nut or other mechanical device can be engaged in the casing to secure and compress the sealing member in the casing whereby to seal the chamber 3.
- the member 6 is removable from the casing to insert material 5 into chamber 3 and to remove compressed material therefrom.
- An annular heater 7 surrounds the chamber 3 to transmit heat to the material 5 in chamber 3 to effect compression under heat of material 5 when this is desirable.
- T he piston 4 is adapted for external connection with a press or jack or the like to transmit pressure to the fluid 8 (generally a liquid, such as oil) in the chambers 2 and 3.
- the piston 4 also serves the function of inlet of fluid to the chambers.
- the piston contains an insert 9 forming a bore or passageway 10 leading to a fluid inlet 11.
- a valve 12 in the form of a ball serves to close the inlet 11 under the action of a spring 13 when the chambers are not under pressure, and by the hydraulic pressure developed in the fluid 8 and applied to the valve 12 when the piston 4 is active.
- a seal ring 14 is placed in the walls of chamber 2 around piston 4, and the presence of the bore pressurizes the interior of piston 4 and causes the piston to hear more intensely on seal ring 14 thereby preventing leakage past seal 14 during pressurization, which insures leak-tightness at seal 14.
- the piston 4 includes depending stems 15 which are slidably engaged in the casing 1 for guiding the displacement of the piston and insuring pure axial movement thereof.
- the sealing member 6 which leak-tightly seals the end of chamber 3 has a portion 16 extending into chamber 3 and portion 16 has a blind bore 17 therein as shown in FIG. 2.
- the sealing member 16 is constituted of a resilient material, such as rubber, and a seal 18 is mounted on portion 16 in the Wall of chamber 3. During pressurization, the blind bore 17 is subjected to the pressure of the fluid and the portion 16 is deformed outwardly to be compressed against seal 18 whereby to insure the leaktightness of chamber 3.
- the casing is mounted on a roller bearing 19 to facilitate transport of the apparatus from one place to another to enhance its portability.
- a discharge device 20 is provided.
- the device 20 is mounted in a passage 21 which leads to chamber 3 and is subject to the pressure of the fluid therein and the device 20 comprises a ball valve 22 acted on by a spring 23 to close a passage 24 leading externally of the casing.
- a manual control member 25 is threadably engaged in casing 1 and has a stem 26 facing ball 22 such that as the control member is threadably advanced in casing 1, the stem will push ball 22 away from its seat whereupon passage 24 will be open for discharge of the fluid from the chambers.
- the apparatus is operative for many purposes and with various types of displacement devices, such as single acting presses having suflicient stroke.
- the apparatus can be used for (a) isostatic compression of powdery materials such as hot or cold compression of explosive powders,
- Pressurizing apparatus comprising a casing defining flrst and second intercommunicating chambers extending at right angles to one another, a piston slidably supported in one chamber for pressurizing a fluid contained in the chamber, means replaceably in said casing for furnishing access to the other of said chambers for insertion therein and removal therefrom of materials to be pressurized, a sealing means in said casing engaging said piston to seal said one chamber, said piston being provided with a bore exposed to the fluid pressure in the chamber such that said piston compresses said sealing means under the pressure of the fluid in said bore to intensify the sealing of said one chamber.
- Pressurizing apparatus as claimed in claim 2 comprising an insert threaded into said piston at said bore and defining clearance therewith, said insert having a passageway leading from said one chamber to said clearance.
- valve means comprises a valve member, and a spring engaged by said insert and acting on said valve member to close said inlet.
- valve member is a ball
- Pressurizing apparatus as claimed in claim 1 comprising heater means on said casing for supplying heat to the material during compression thereof.
- Pressurizing apparatus as claimed in claim 1 comprising valve means in communication with one of said chambers for selectively communicating the same with ambient atmosphere to depressurize the chambers, said valve means including a spring-loaded valve member exposed to the pressure of the fluid in the chambers and urged to closed position thereby, and a manually operated control member for engaging the valve member to open the same against the pressure of the spring action thereof.
- Pressurizing apparatus as claimed in claim 1 comprising sealing means for said other chamber including a seal in said casing, said means for furnishing access to the other of the chambers comprising a removable member in said other chamber engaging said seal and having a bore exposed to the pressure of said fluid for deforming said removable member under said pressure to press said member against said seal and intensity the sealing of said other chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Press Drives And Press Lines (AREA)
- Automatic Assembly (AREA)
- Powder Metallurgy (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6916845A FR2044506A5 (fr) | 1969-05-23 | 1969-05-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3664801A true US3664801A (en) | 1972-05-23 |
Family
ID=9034500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US38348A Expired - Lifetime US3664801A (en) | 1969-05-23 | 1970-05-18 | Apparatus for developing high fluid pressure |
Country Status (6)
Country | Link |
---|---|
US (1) | US3664801A (fr) |
CH (1) | CH507762A (fr) |
DE (1) | DE2025213A1 (fr) |
FR (1) | FR2044506A5 (fr) |
GB (1) | GB1252865A (fr) |
SE (1) | SE357698B (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779277A (en) * | 1972-02-29 | 1973-12-18 | Nat Forge Co | Anti-dirt sleeve for isostatic press |
US3787156A (en) * | 1971-05-06 | 1974-01-22 | Asea Ab | Press for treating products under high isostatic pressure |
US3806303A (en) * | 1971-11-29 | 1974-04-23 | Atomic Energy Authority Uk | Closures for pressure vessels |
US3830086A (en) * | 1972-09-28 | 1974-08-20 | Tokyo Sharya Siezo Kk | Impact hydraulic pressure generator |
US3830607A (en) * | 1973-01-05 | 1974-08-20 | Gleason Works | Apparatus for compacting material |
CN113775599A (zh) * | 2021-11-02 | 2021-12-10 | 杭州谦泰五金机械制造有限公司 | 温降式防爆预警液压油缸 |
-
1969
- 1969-05-23 FR FR6916845A patent/FR2044506A5/fr not_active Expired
-
1970
- 1970-03-25 SE SE04099/70A patent/SE357698B/xx unknown
- 1970-04-02 CH CH491470A patent/CH507762A/de not_active IP Right Cessation
- 1970-05-18 US US38348A patent/US3664801A/en not_active Expired - Lifetime
- 1970-05-22 GB GB1252865D patent/GB1252865A/en not_active Expired
- 1970-05-23 DE DE19702025213 patent/DE2025213A1/de active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3787156A (en) * | 1971-05-06 | 1974-01-22 | Asea Ab | Press for treating products under high isostatic pressure |
US3806303A (en) * | 1971-11-29 | 1974-04-23 | Atomic Energy Authority Uk | Closures for pressure vessels |
US3779277A (en) * | 1972-02-29 | 1973-12-18 | Nat Forge Co | Anti-dirt sleeve for isostatic press |
US3830086A (en) * | 1972-09-28 | 1974-08-20 | Tokyo Sharya Siezo Kk | Impact hydraulic pressure generator |
US3830607A (en) * | 1973-01-05 | 1974-08-20 | Gleason Works | Apparatus for compacting material |
CN113775599A (zh) * | 2021-11-02 | 2021-12-10 | 杭州谦泰五金机械制造有限公司 | 温降式防爆预警液压油缸 |
CN113775599B (zh) * | 2021-11-02 | 2022-06-10 | 杭州谦泰五金机械制造有限公司 | 温降式防爆预警液压油缸 |
Also Published As
Publication number | Publication date |
---|---|
FR2044506A5 (fr) | 1971-02-19 |
DE2025213A1 (de) | 1971-03-18 |
CH507762A (de) | 1971-05-31 |
GB1252865A (fr) | 1971-11-10 |
SE357698B (fr) | 1973-07-09 |
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