US1951926A - Relief valve - Google Patents
Relief valve Download PDFInfo
- Publication number
- US1951926A US1951926A US37796829A US1951926A US 1951926 A US1951926 A US 1951926A US 37796829 A US37796829 A US 37796829A US 1951926 A US1951926 A US 1951926A
- Authority
- US
- United States
- Prior art keywords
- valve
- container
- chamber
- pressure
- relief valve
- 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
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Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- Y10T137/1624—Destructible or deformable element controlled
- Y10T137/1632—Destructible element
- Y10T137/1789—Having pressure responsive valve
Definitions
- the present invention relates to valves for automatically relieving the.pressure within portable containers, such as containers employed for conveying liquefied petroleum gas.
- the purpose of the present invention is to provide a simple and eiiicient device for relieving abnormal pressures in containers of this character which vents only a sufiicient amount of gas to relieve the pressure, and thereafter closes tightly and automatically to prevent escape of the bulk of the contents.
- the device may be readily inserted within a container, and when installed does not project therefrom in a manner to become easily broken or interfere with the convenient handling of the container.
- the container 10 which may be provided with a boss 12, has threaded thereinto a valve body 14 having an external threaded portion which projects well within the container when mounted in position.
- the inner portion of the valve body is provided with a guide 16 for a valve stem 18, having a head 20 which is positioned within a chamber 22 formed within the' threaded portion of the valve body as indicated.
- the chamber has. communication with the interior of the container through an axial port 24 in free communication with transverse ports 26.
- the port 24 is normally closed by the valve- 20 which is maintained on its seat by a spring 28 surrounding the inner end of the valve stem and interposed between abutments 30 and 32.
- the abutment 30 is supported on the inner end of the guide member 16, and the cooperating abutment 32 is supported on an adjustable head 34 threadedly connected with the valve stem at 36 and maintained in adjusted position by a lock nut 38.
- a frangible copperdisk 40 which is clamped within the valve body by a plug 44 which engages the frangible disk through interposed aluminum packing ring 46.
- the contents of the container are hermetically sealed from the atmosphere through the frangible disk.
- the creation of an abnormal pressure within the container is sufficient to elevate the valve 20 and rupture the frangible disk, relieving the pressure. Venting a portion of the contents with consequent relief of pressure causes the valve 20 to be reseated, preventing further escape of contents from the container.
- the 'valve 20 will be set to relieve at a lower pressure than the rupturing pressure of the disk.
- valve and the operating mechanism are located within the container, the only projecting portion being the head of the valve body and the sealing plug. Furthermore, a ruptured disk may be replaced by removal of the plug without dismounting the valve from the container.
- the valve and cooperating parts are sealed from dust and dirt by the frangible disk, and no opportunity is present for engagement of foreign material between the valve and seat or within the moving parts of the valve.
- a relief valve for portable containers comprising a body portion adapted to be mounted in the container and having, a chamber and a passage affording communication between the inner end of the chamber and interior of the container, a spring-pressed valve normally closing the passage at the inner end of the chamber and wholly contained within the container, a frangible member detachably supported within the body at the outer end of the chamber, and a holding plug mounted within the outer end of the body and detachably retaining the frangible member in place, the plug being removable and the frangible member replaceable without dismantling the body from the container.
- a relief valve for portable containers comprising an externally threaded body portion screwed into the container and her extending into the threaded a passage afiording the container, an outd valve mounted the chamber and arranged y within the container for sealing against ingress of air through the passage at the inner end of the chamber, and a frangible member hermetically sealing the outer,
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
-'March 20, 1934. I K, s. M. DAVIDSCN 1,951,926
v RELIEF VALVE Filed July 1a, 1929 Inumr 715-7151986- K991112751. I
(M MAW M Patented Mar. 20, 1934 UNITED STATES PATENT OFFICE RELIEF VALVE setts Application July 13, 1929, Serial No. 377,968
2 Claims.
The present invention relates to valves for automatically relieving the.pressure within portable containers, such as containers employed for conveying liquefied petroleum gas.
it is desirable to provide in connection with such containers some form of relief which will prevent bursting of the container under abnormal pressure. Such a pressure may well result from the temporary and abnormal heating of the container, either during transportation or use. These containers have been provided with frangible seals designed to rupture under such pressure, and avoid bursting of the tank. However, devices of this character are relatively unsatisfactory due to the fact that rupture of the seal causes the contents of the tank to become empty, and may in addition cause the liberation of large quantities of a combustible or explosive medium when mixed with air.
The purpose of the present invention is to provide a simple and eiiicient device for relieving abnormal pressures in containers of this character which vents only a sufiicient amount of gas to relieve the pressure, and thereafter closes tightly and automatically to prevent escape of the bulk of the contents. The device may be readily inserted within a container, and when installed does not project therefrom in a manner to become easily broken or interfere with the convenient handling of the container.
The various features of the invention consist in certain novel constructions, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.
The accompanying drawing, illustrating the preferred form of the invention, is a sectional elevation of the improved device embodied in a container of the usual type.
As indicated in the drawing, the container 10, which may be provided with a boss 12, has threaded thereinto a valve body 14 having an external threaded portion which projects well within the container when mounted in position. The inner portion of the valve body is provided with a guide 16 for a valve stem 18, having a head 20 which is positioned within a chamber 22 formed within the' threaded portion of the valve body as indicated. The chamber has. communication with the interior of the container through an axial port 24 in free communication with transverse ports 26. The port 24 is normally closed by the valve- 20 which is maintained on its seat by a spring 28 surrounding the inner end of the valve stem and interposed between abutments 30 and 32. The abutment 30 is supported on the inner end of the guide member 16, and the cooperating abutment 32 is supported on an adjustable head 34 threadedly connected with the valve stem at 36 and maintained in adjusted position by a lock nut 38. Located beyond the valve 20 and normally hermetically sealing the chamber 22 is a frangible copperdisk 40 which is clamped within the valve body by a plug 44 which engages the frangible disk through interposed aluminum packing ring 46. In the normal condition of the device the contents of the container are hermetically sealed from the atmosphere through the frangible disk. However, the creation of an abnormal pressure within the container is sufficient to elevate the valve 20 and rupture the frangible disk, relieving the pressure. Venting a portion of the contents with consequent relief of pressure causes the valve 20 to be reseated, preventing further escape of contents from the container. In ordinary practice the 'valve 20 will be set to relieve at a lower pressure than the rupturing pressure of the disk.
With this type of construction the major portion of the valve and the operating mechanism are located within the container, the only projecting portion being the head of the valve body and the sealing plug. Furthermore, a ruptured disk may be replaced by removal of the plug without dismounting the valve from the container. When the device is in Working condition the valve and cooperating parts are sealed from dust and dirt by the frangible disk, and no opportunity is present for engagement of foreign material between the valve and seat or within the moving parts of the valve.
What is claimed is:
1. A relief valve for portable containers comprising a body portion adapted to be mounted in the container and having, a chamber and a passage affording communication between the inner end of the chamber and interior of the container, a spring-pressed valve normally closing the passage at the inner end of the chamber and wholly contained within the container, a frangible member detachably supported within the body at the outer end of the chamber, and a holding plug mounted within the outer end of the body and detachably retaining the frangible member in place, the plug being removable and the frangible member replaceable without dismantling the body from the container.
2. A relief valve for portable containers comprising an externally threaded body portion screwed into the container and her extending into the threaded a passage afiording the container, an outd valve mounted the chamber and arranged y within the container for sealing against ingress of air through the passage at the inner end of the chamber, and a frangible member hermetically sealing the outer,
end of the chamber beyond the valve and preventing access to the valve and seat and the chamber sealed by the frangible member.
KENNETH S. M. DAVIDSON.
but
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37796829 US1951926A (en) | 1929-07-13 | 1929-07-13 | Relief valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37796829 US1951926A (en) | 1929-07-13 | 1929-07-13 | Relief valve |
Publications (1)
Publication Number | Publication Date |
---|---|
US1951926A true US1951926A (en) | 1934-03-20 |
Family
ID=23491201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US37796829 Expired - Lifetime US1951926A (en) | 1929-07-13 | 1929-07-13 | Relief valve |
Country Status (1)
Country | Link |
---|---|
US (1) | US1951926A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2506737A (en) * | 1948-03-25 | 1950-05-09 | Weatherhead Co | Relief valve cap |
US2526795A (en) * | 1946-10-18 | 1950-10-24 | Du Pont | Safety relief diaphragm |
US2673660A (en) * | 1950-07-10 | 1954-03-30 | Thornhill Craver Company Inc | Pressure relief device |
US3043334A (en) * | 1958-07-17 | 1962-07-10 | Kosangas As | Gas cylinder fitting |
US5029730A (en) * | 1989-03-23 | 1991-07-09 | Sparklet Devices, Inc. | Weldably sealed oxygen container |
US6142346A (en) * | 1998-07-29 | 2000-11-07 | Aderholt; Steven K. | Cluster-type relief device |
US6431196B1 (en) * | 2000-04-07 | 2002-08-13 | Bs&B Safety Systems, Inc. | Combination pressure relief device |
US6742538B1 (en) | 2002-04-19 | 2004-06-01 | Western Valve | Method and apparatus for orbital and seal welded relief device on a compressed gas cylinder |
US20100282331A1 (en) * | 2009-05-08 | 2010-11-11 | Shmuel Dovid Newman | Burst Disk Assembly |
-
1929
- 1929-07-13 US US37796829 patent/US1951926A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526795A (en) * | 1946-10-18 | 1950-10-24 | Du Pont | Safety relief diaphragm |
US2506737A (en) * | 1948-03-25 | 1950-05-09 | Weatherhead Co | Relief valve cap |
US2673660A (en) * | 1950-07-10 | 1954-03-30 | Thornhill Craver Company Inc | Pressure relief device |
US3043334A (en) * | 1958-07-17 | 1962-07-10 | Kosangas As | Gas cylinder fitting |
US5029730A (en) * | 1989-03-23 | 1991-07-09 | Sparklet Devices, Inc. | Weldably sealed oxygen container |
US6142346A (en) * | 1998-07-29 | 2000-11-07 | Aderholt; Steven K. | Cluster-type relief device |
US6431196B1 (en) * | 2000-04-07 | 2002-08-13 | Bs&B Safety Systems, Inc. | Combination pressure relief device |
US6742538B1 (en) | 2002-04-19 | 2004-06-01 | Western Valve | Method and apparatus for orbital and seal welded relief device on a compressed gas cylinder |
US20100282331A1 (en) * | 2009-05-08 | 2010-11-11 | Shmuel Dovid Newman | Burst Disk Assembly |
US7975714B2 (en) * | 2009-05-08 | 2011-07-12 | Daas Ip Management, Llc | Burst disk assembly |
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