US618903A - Pressure-relief valve - Google Patents
Pressure-relief valve Download PDFInfo
- Publication number
- US618903A US618903A US618903DA US618903A US 618903 A US618903 A US 618903A US 618903D A US618903D A US 618903DA US 618903 A US618903 A US 618903A
- Authority
- US
- United States
- Prior art keywords
- valve
- pressure
- escape
- chamber
- relief
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000007788 liquid Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 230000000979 retarding Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000266 injurious Effects 0.000 description 2
- 230000002093 peripheral Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2559—Self-controlled branched flow systems
- Y10T137/2574—Bypass or relief controlled by main line fluid condition
- Y10T137/2605—Pressure responsive
- Y10T137/2635—Pilot valve operated
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/785—With retarder or dashpot
- Y10T137/7852—End of valve moves inside dashpot chamber
- Y10T137/7853—Enlarged piston on end of valve stem
Definitions
- This invention has relation to a novel improvement in pressure-relief valves.
- the object of my invention is to provide a simple device by means of which a pipe or its connections may be relieved of the injurious effects due to a sudden stoppage of the contained flowing liquid or gases.
- this valve F As the upward movement of this valve F would also carry with it the piston 7, the water which would be in the chamber C, as this chamber is in open communication with the main pipe B, would be brought under strain; but the relief-valve F would have been set to a certain pressure, and as soon as that pressure would be exceeded by any cause whatever this valve would open to permit an escape of the 1 fiuid'within this upper chamber, so that a portion of the water within the pipes 13 13 would also be withdrawn, providing a practically duplex and automatic relief.
- the piston 7 and the valve 5 would ride upwardlya distance according to the pressure, but the valve would be prevented from going upward any farther than the upper end of the rod 4,which acts as a stop in abutting against the top plate 10, so that a check is oifered the upward movement of the valve and piston.
- I utilize the pressure of the liquid or gases contained in the main pipe to close the relief-valve, retarding its action until after the main pipe and its connections have been given relief and then bringing the same pressure to stop further waste by closing the valve.
- the plunger-valve 5 is in direct communication with the main pipe and receives the water hammer or blow, and in consequence is forced out, allowing some of the contained liquid or gases to escape through the discharge-outlet, providing an instantaneous reduction of the pressure, and the retarded pressure, throttled in its passage through the pipes 13 13, later begins to act on the larger surface of the piston 7 in the upper chamber to close the same.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Description
No. 6l8,903. Patented Feb. 7, I899.
a. T. PRINCE. PRESSURE BELIEF VALVE.
(Application filed Sept. 28, 1897.)
(No Model.)
lNVENTOl? A TTOHNE Y.
ATENT F GEORGE T. PRINCE, OF OMAHA, NEBRASKA.
PRESSURE-RELIEF VALVE.
SPECIFICATION forming part of Letters Patent No. 618,903, dated February '7, 1899.
Application filed September 281 1897. Serial No. 653,388. (No model.)
To all whom it may concern:
Be it known that I, GEORGE T. PRINCE, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain useful Improvements in Pressure-Relief Valves; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, which forms a part of this specification.
This invention has relation to a novel improvement in pressure-relief valves.
The object of my invention is to provide a simple device by means of which a pipe or its connections may be relieved of the injurious effects due to a sudden stoppage of the contained flowing liquid or gases.
In the accompanying drawing Ihave shown a sectional View of a pressure-relief valve embodying my invention.
In my invention I will describe the same as if used in a water system, though it should be understood that the relief-valve could be used in conjunction with any pipe system conducting either liquid or gas, as desired.
It is a well-known fact that flowing water or other liquids if suddenly checked in their progress by means of a valve cause a highlyincreased pressure, which often results in the fracture of the pipes. To overcome this is the object of my invention, in which I provide a pressure-relief valve which as soon as the flowing of the liquid is stopped the reliefvalve will be automatically opened to permit the escape. of a certain amount of the fluid and the same shock that opens my reliefvalve is utilized in retarding the same to again close the valve.
In the accompanying drawing I have shown at B a main pipe adapted to contain any suitable liquid or gases, which is provided with an extending escape-way2, which terminates in a valve-seating closed by means of a valve 5, which Valve works upon a stem 4, and this stem in turn is provided above with a piston 7, containing a suitable packing-ring 6, which works within the valve-pot 8 in communication, by means of the escapeway 9, with the valve-chamber D. Extending from this chamber D is an escape-way 3,
while the pressure-relief housing A is further provided above with a second chamber G, within which is secured the pot 8 and from which upper chamber extends a pipe-openin g 12 in communication with the pipes 13 13, which are returned to enter the pipe ]3. Communicating with the chamber 0 is an ordinary relief-valve comprising the seating 17, which is provided with a guiding-sleeve a, within which works the stem 16, forming part of the valve F, and this valve F is normally forced into its seating by means of the spring 6.
Under ordinary conditions my pressurerelief valve is closed, as is also the auxiliary relief-valve F within the upper chamber 0. Now should this pressure-relief valve be used in conjunction with awater system and should the water flowing Within the pipe B be suddenly checked the excess of pressure caused by the sudden checking of the flowing water would press upward the valve F to permit a partial escape of the water within the pipe B. As the upward movement of this valve F would also carry with it the piston 7, the water which would be in the chamber C, as this chamber is in open communication with the main pipe B, would be brought under strain; but the relief-valve F would have been set to a certain pressure, and as soon as that pressure would be exceeded by any cause whatever this valve would open to permit an escape of the 1 fiuid'within this upper chamber, so that a portion of the water within the pipes 13 13 would also be withdrawn, providing a practically duplex and automatic relief.
The water escaping from the chamber D out of the escape-way 3 could be led to any suitable point, and, if desired, the water escaping out of the relief-valve F could also be given direction. However, the same shock that made itself felt upon the lower valve 5 would in retarded form be exerted up the column filling the pipes 13 13, and entering at 12 and extending into the chamber 0 and exerting its force upon the piston 7 would act to force down this piston to close the valve 5, the pressure required to open the valve F being greater than that required to force this piston 7 into its normal position. The piston 7 and the valve 5 would ride upwardlya distance according to the pressure, but the valve would be prevented from going upward any farther than the upper end of the rod 4,which acts as a stop in abutting against the top plate 10, so that a check is oifered the upward movement of the valve and piston.
It will be seen that I utilize the pressure of the liquid or gases contained in the main pipe to close the relief-valve, retarding its action until after the main pipe and its connections have been given relief and then bringing the same pressure to stop further waste by closing the valve.
The plunger-valve 5 is in direct communication with the main pipe and receives the water hammer or blow, and in consequence is forced out, allowing some of the contained liquid or gases to escape through the discharge-outlet, providing an instantaneous reduction of the pressure, and the retarded pressure, throttled in its passage through the pipes 13 13, later begins to act on the larger surface of the piston 7 in the upper chamber to close the same.
In the drawing it will be noticed that I have shown in the upper chamber a cylinder open above, Within which reciprocates an ordinary piston, forming, in efiect, what is known as a dash-pot. In this connection, however, it should be understood that an ordinary diaphragm secured around its peripheral edges and Working over the opening 9 could be used in place of this piston and cylinder, in that in the use of the diaphragm, however, the movement is necessarily limited, so that the lower valve 5 would not be carried up a very far. In order to provide a prompt and full action of this lower valve, I employ the device as shown; but it should be understood that I do not Wish to exclusively confine myself to the use of this piston, as in a great many cases a diaphragm could be employed with equal success; and now,
Having thus described my said invention, what I claim as new, and desire to secure by United States Letters Patent, is-
1. The combination with a pipe-section provided with an escape-way, of a valve within said escape-way, a chamber extending from said escape-way, a housing in communication with said chamber by means of an openended valveway, an escape-way leading from said chamber, a piston reciprocating within said valveway, a second unvalved escape-way leading from said housing to said pipe-section, and means to unite said valve and piston substantially as and for the purpose set forth.
2. The combination with a pipe-section provided with an escape-way, of a valve within said escape-way, a chamber extending from said escape-way, a housing in communication with said chamber by means of an openended valveway, an escape-way leading from said chamber, a piston reciprocating within said valveway, a second unvalved escape-way leading from said housing to said pipe-section, means to unite said valve and piston and a relief-valve within said housing substantially as and for the purpose set forth.
In testimony whereof I aifix my signature in presence of two witnesses.
GEORGE T. PRINCE.
Witnesses:
GEORGE W. Suns, ANE M. ELKJER.
Publications (1)
Publication Number | Publication Date |
---|---|
US618903A true US618903A (en) | 1899-02-07 |
Family
ID=2687512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US618903D Expired - Lifetime US618903A (en) | Pressure-relief valve |
Country Status (1)
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US (1) | US618903A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2935999A (en) * | 1954-12-03 | 1960-05-10 | Zahnradfabrik Friedrichshafen | Delay action pressure by-pass systems and valves therefor for hydraulic transmissions |
US3278154A (en) * | 1963-09-03 | 1966-10-11 | Daniel T Gundersen | Blast closure |
US4719937A (en) * | 1985-11-29 | 1988-01-19 | Hydril Company | Marine riser anti-collapse valve |
US5279319A (en) * | 1991-09-25 | 1994-01-18 | Fidelman George R | Water pressure relief method and system for water heaters |
US20030047217A1 (en) * | 2001-09-07 | 2003-03-13 | Pierburg Gmbh | Precompression control arrangement |
US20030079781A1 (en) * | 2001-08-16 | 2003-05-01 | Vaclav Chrz | Quick closing shut-off valve |
US20080011360A1 (en) * | 2006-07-12 | 2008-01-17 | Bell Thomas M | Device for regulating pressure |
US20100139789A1 (en) * | 2008-12-04 | 2010-06-10 | Dulac Lawrence M | Relief valve with fluid outlet |
US20130081725A1 (en) * | 2010-06-15 | 2013-04-04 | Akira Arisato | Time delay valve |
US9879799B2 (en) | 2015-09-16 | 2018-01-30 | Cameron International Corporation | Pressure regulator |
US11028932B2 (en) * | 2016-09-26 | 2021-06-08 | Fmc Technologies, Inc. | Pressure relief valve |
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0
- US US618903D patent/US618903A/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2935999A (en) * | 1954-12-03 | 1960-05-10 | Zahnradfabrik Friedrichshafen | Delay action pressure by-pass systems and valves therefor for hydraulic transmissions |
US3278154A (en) * | 1963-09-03 | 1966-10-11 | Daniel T Gundersen | Blast closure |
US4719937A (en) * | 1985-11-29 | 1988-01-19 | Hydril Company | Marine riser anti-collapse valve |
US5279319A (en) * | 1991-09-25 | 1994-01-18 | Fidelman George R | Water pressure relief method and system for water heaters |
US7025083B2 (en) * | 2001-08-16 | 2006-04-11 | Chart Inc. | Quick closing shut-off valve |
US20030079781A1 (en) * | 2001-08-16 | 2003-05-01 | Vaclav Chrz | Quick closing shut-off valve |
US20030047217A1 (en) * | 2001-09-07 | 2003-03-13 | Pierburg Gmbh | Precompression control arrangement |
US20080011360A1 (en) * | 2006-07-12 | 2008-01-17 | Bell Thomas M | Device for regulating pressure |
US7757703B2 (en) * | 2006-07-12 | 2010-07-20 | Cameron International Corporation | Device for regulating pressure |
US20100139789A1 (en) * | 2008-12-04 | 2010-06-10 | Dulac Lawrence M | Relief valve with fluid outlet |
US20130081725A1 (en) * | 2010-06-15 | 2013-04-04 | Akira Arisato | Time delay valve |
US9879799B2 (en) | 2015-09-16 | 2018-01-30 | Cameron International Corporation | Pressure regulator |
US11028932B2 (en) * | 2016-09-26 | 2021-06-08 | Fmc Technologies, Inc. | Pressure relief valve |
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