US2419293A - Relief valve tester - Google Patents
Relief valve tester Download PDFInfo
- Publication number
- US2419293A US2419293A US506237A US50623743A US2419293A US 2419293 A US2419293 A US 2419293A US 506237 A US506237 A US 506237A US 50623743 A US50623743 A US 50623743A US 2419293 A US2419293 A US 2419293A
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- United States
- Prior art keywords
- valve
- cylinder
- pressure
- jack
- adapter
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Definitions
- This invention relates to the testing of valves, and has particular relation to apparatus for the testing of safety valves on high pressure fluid containers by pulling the valve oil of its seat.
- Another object of my invention is to provide easily attached means simple in operation for testing safety valves of iluid cylinders.
- Another object is to provide hydraulic valve pulling means so that exact measurements of the forces involved may be made.
- Another object is to provide means whereby the safety valve may be adjusted if it should fail to seat properly after vbeing tested.
- Figure 1 is an elevational view with parts in cross section and parts broken away of a hy,-
- Figure 4 is a view in perspective of the stand shown in Figure 1 on which the hydraulic jack is mounted.
- Tank 5 is provided with a threaded nipple IIJ to receive a safety valve body l I.
- tank 5 is provided with a safety pressure relief valve composed of body I I, valve seat I2 and a valve head I3.
- the valve head is provided with a sealing gasket
- valve head I3 has a valve stem I3 depending therefrom, the valve stem being guided by fins I9 in valve body II and by collar 20.
- Valve steml I8 is provided with a screw threaded end 2
- a spring 25 is under compression between sleeves 2i) and 24 and tends to hold the "valve closed. Adjustment of lock nuts 22 and v23 will adjust the compression of this spring and thereby the force necessary to open the safety valve I3.
- stud I6 The upper end of stud I6 is slabbed off to a substantially square end 26 and a pull ring 21 may be screwed on stud I6 for the purpose of making a test of the force necessary to open the safety valve I3.
- valves While a particular type of valve has been shown it is obvious that other types kof valves could be used as long as they opened upwardly and had a screw threaded portion I6 to be engaged by the pulling ring 21.
- the apparatus for pulling the valve i3 open consists of a pulling ring 2l on the valve and an adaptersleeve 23'on the valve body II, the remainder of the apparatus being supported on the adapter sleeve and engaging the pulling ring.r
- diiferent sizes yof adapters the same pulling apparatus may be used to test different ⁇ sizes of valves.
- Adapter sleeve 23 supports stand 29 which 4is removably secured thereto by bolts 30 and wing nuts'SI.
- Adapter 23' has a rectangular slot 32 in the side thereof to provide access to the nut I'I for adjusting it with an end wrench.V
- VStand 29 supports a hydraulic jack 33, the jack being removably secured to the stand by wing nuts 34 and bolts 35.
- Hydraulic jack 33 is provided with a'jack handle 33 for pumping up pressure in pump 3l and with a pressure gage 33 for indicating the pressure in the cylinder of jack 33.
- Jack 33 has a movable 3 piston member 39 which is forced upward by oil from pump 31.
- Pivot pin 40 is secured to a square yoke frame 4l by means of nut 42, the pivot pin passing through the frame.
- a hook 43 is centrally located in the lower part of 4frame 4
- Hook 4'3 has a screw threaded shank 44 passing through the frame and a flange 45 is formed in the shank. The hook is secured in place by washer 46 and lock nuts 47 and 48.
- screws 4S are provided in the adapter sleeve flange 50 to help in lining up holes 5I with holes 52 in the flange of the stand 29.
- the stand 29 is seen to have a flared lower portion 53 and a central "slot 54 is provided to allow yoke 4l ⁇ to operate inside the stand.
- Plates 55 having holes 56 are provided on the top of the stand for receiving nuts 35 to attach jack 33 ⁇ Y Operation
- valve 9 is opened 'so thatpressure'gage a will register the pressure of the num in the cylinder 5.
- Pump handle 36 is then pumped up l'and down Aunt-il ⁇ valve I3 is unseated enoughto ⁇ A'startteleak.
- Pump handle 35 should be operated'v'e'ry slowly between the time whenV hook 43 first contacts ring 1l and this rst leak.
- the test ishade atthe rst leak'of the valve and not at the pressure Vat which it would pop o'pn, because it would be fthe first leak that would annoy the customer, who naturally does not 'want a leaky gas cylinder around his house.
- R T+ PB- F-B "R isftheireiief 'pressure'at kwhich the valve will jopen; Tisthe tank pressure shown ⁇ on gagef8; 1P is the' pressurev in the hydraulic jackshow'n on "gageV 38; B is the ⁇ areaof the hydraulic jackcylinder; F is the pressure in thehydraulic jack cylinder necessary to overcome'friction in the jjackandithe ⁇ weightof frame 4
- a jack for pulling relief valves comprising in combination a hydraulic cylinder, a piston in the cylinder, a pump for supplying pressure liuid to move rthe piston, a rectangular frame resting on the piston and passing beneath the cylinder, and a support Vfor the cylinder comprising an adapter to t the relief valve and a split support having two legs one on eachV side of the rectangular frame, the adapter supporting the support on the valve and the support supporting the cylinder on 'the adapter.
- a jack for pulling relief valves comprising in combination a cylinder, a piston in the cylinder, a rectangular frame resting on theipiston and'passing beneath the cylinder, and a support forithe cylinder comprising an adapter to t the'relief valve and 'a split supporthaving twolegs 'oneon each side of the rectangular frame, ,the v'adapter supporting the support on the valve kandithe Isupport supporting the cylindercn the adapter.
- a jack for ypulling .relief'valves comprising in 'combination a cylinder, a piston in thecylinder, a 4rectangular frame resting 'on the piston and passing beneath the cylinder, and az'support for the cylinder comprising a split supporthaving two legs one on each side ofthe ,rectangular frame.
- saidspacing'support member being Vcut awayV to allow said rectangular frame to hang freely from saidpiston and to operate out of contact with said support, andrmeans. onrsaid rectangular frame below saidcylinder forsengagingla portion of said valve.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Description
H. E. SIMONSON RELIEF VALVE TESTER Apfil 22, V1947.
Filed Oct. 14, 1943 ATTORNEYS 2 Sheets-Sheet 1 April 22, 1947. H. E. slMoNsoN- 2,419,293
RELIEF VALVE TESTER Filed Oct. 14, 1943 2 Sheets-Sheet 2 v NVENTOR H.E. SIMONSON F/G-'4 ATTo NEY the valve body.
Patented Apr. 22, 1947 RELIEF VALVE TESTER Howard E. Simonson, Bartlesville, Okla., assignor to Phillips Petroleum Company, a corporation of Delaware Application October 14, 1943, Serial No. 506,237
This invention relates to the testing of valves, and has particular relation to apparatus for the testing of safety valves on high pressure fluid containers by pulling the valve oil of its seat.
In the art of distributing iiuids under pressure in cylinders it is very important to provide these cylinders witha pressure relief valve that will be sure to open if a safe pressure is exceeded by the uid inside the cylinder. Even a single accident caused by the rupturing of a cylinder in the distribution or use by the consumer of domestic cookinggas or industrial fuel gas, or other gases in cylinders might very well result in the loss of numerous customers or potential customers. A test of the safety valve at reasonable time intervals is good practice. The present invention makes this test with a minimum loss of gas and onlyv one filling and no bleeding off of the container'is necessary afterwards as would be the casetif the cylinder were filled untilY the valve openedby internal pressure alone.
It is an object of the present invention to test the safety'valve in each cylinder after the cylinder is filled with fluid to see that the safety valve is in. order and will operate at the desired relief pressure.
Another object of my invention is to provide easily attached means simple in operation for testing safety valves of iluid cylinders. l
Another object is to provide hydraulic valve pulling means so that exact measurements of the forces involved may be made.
.Another object is to provide means whereby the safety valve may be adjusted if it should fail to seat properly after vbeing tested.
Numerous other objects will be apparent to those skilled in the art by reading the specication andthe claims and studying the drawings of this application.
In the drawings t o Figure 1 is an elevational view with parts in cross section and parts broken away of a hy,-
draulic--jack valve-pulling embodiment of my invention applied to thesafety valve of a fluid pressure. cylinder.
'Figure 2'is aperspective view Vof the adapter employed in Figure 1 to mount the apparatus on Figure is an elevation of the yoke and hook shownin AFigure 1 with the hook rotated through anangle of 90.
Figure 4 is a view in perspective of the stand shown in Figure 1 on which the hydraulic jack is mounted.
In Figure 1, a cylinder 5 for transporting iiuids 4 Claims.
l under pressure is provided with a filling line 6 and a lling valve 1. The cylinder 5 is also provided with a test gage 3 and test gage valve 9. When the cylinder is transported, valves I and 9 are closed and pipe 6 and gage 8 are removed. Tank 5 is provided with a threaded nipple IIJ to receive a safety valve body l I. To prevent accidents, tank 5 is provided with a safety pressure relief valve composed of body I I, valve seat I2 and a valve head I3. The valve head is provided with a sealing gasket |11, a gasket compressing member I5, anrupwardly projecting screw stud I6 and a washer adjustment nut I1. The valve head I3 has a valve stem I3 depending therefrom, the valve stem being guided by fins I9 in valve body II and by collar 20. Valve steml I8 is provided with a screw threaded end 2| and lock nuts 22 and 23 to secure spring engaging collar 24 tothe valve stem. A spring 25 is under compression between sleeves 2i) and 24 and tends to hold the "valve closed. Adjustment of lock nuts 22 and v23 will adjust the compression of this spring and thereby the force necessary to open the safety valve I3. v
The upper end of stud I6 is slabbed off to a substantially square end 26 and a pull ring 21 may be screwed on stud I6 for the purpose of making a test of the force necessary to open the safety valve I3.
While a particular type of valve has been shown it is obvious that other types kof valves could be used as long as they opened upwardly and had a screw threaded portion I6 to be engaged by the pulling ring 21.
The apparatus for pulling the valve i3 open consists of a pulling ring 2l on the valve and an adaptersleeve 23'on the valve body II, the remainder of the apparatus being supported on the adapter sleeve and engaging the pulling ring.r By employing diiferent sizes yof adapters the same pulling apparatus may be used to test different` sizes of valves.
VStand 29 supports a hydraulic jack 33, the jack being removably secured to the stand by wing nuts 34 and bolts 35.
In the center of piston 39 is provided a circular depression and a sharp pointed pivot pin 40 rests in this depression. Pivot pin 40 is secured to a square yoke frame 4l by means of nut 42, the pivot pin passing through the frame. In the lower part of 4frame 4| a hook 43 is centrally located. Hook 4'3 has a screw threaded shank 44 passing through the frame and a flange 45 is formed in the shank. The hook is secured in place by washer 46 and lock nuts 47 and 48.
In Figure 2 screws 4S are provided in the adapter sleeve flange 50 to help in lining up holes 5I with holes 52 in the flange of the stand 29.
In Figure 4 the stand 29 is seen to have a flared lower portion 53 and a central "slot 54 is provided to allow yoke 4l `to operate inside the stand. Plates 55 having holes 56 are provided on the top of the stand for receiving nuts 35 to attach jack 33` Y Operation The test 'apparatus being assembled in 'the ymanner vshown vin Figure '1 and "tank V5 being "filledwith its normal shippingload of fluid under lpressu're, valve 9 is opened 'so thatpressure'gage a will register the pressure of the num in the cylinder 5. Pump handle 36 is then pumped up l'and down Aunt-il` valve I3 is unseated enoughto `A'startteleak. Pump handle 35 should be operated'v'e'ry slowly between the time whenV hook 43 first contacts ring 1l and this rst leak. The test ishade atthe rst leak'of the valve and not at the pressure Vat which it would pop o'pn, because it would be fthe first leak that would annoy the customer, who naturally does not 'want a leaky gas cylinder around his house.
l V'When the first leak occurs pressure gage 38 is read.
w VThe 'relation between these pressuresv is as follows:
R =T+ PB- F-B "R isftheireiief 'pressure'at kwhich the valve will jopen; Tisthe tank pressure shown `on gagef8; 1P is the' pressurev in the hydraulic jackshow'n on "gageV 38; B is the`areaof the hydraulic jackcylinder; F is the pressure in thehydraulic jack cylinder necessary to overcome'friction in the jjackandithe `weightof frame 4| "andj related ""As AandB are constants and Fisa' constant for the particular jack, the gage38 lcan be calibrated in pounds, so that by'adding the reading 'of gage' to the reading of 'gage' 8 the relief f'pressure maybe found 'without further calcula- 4 28 are unscrewed from Valve stem I6 and valve body Il respectively and cylinder 5 is ready to be shipped to the customer with the assurance that the safety valve is in proper operating condition.
Alternative construction and changes in design of certain parts will obviously be within the scope of my invention which is dened by the .following claims.
Having described my invention, I claim:
l. A jack for pulling relief valves comprising in combination a hydraulic cylinder, a piston in the cylinder, a pump for supplying pressure liuid to move rthe piston, a rectangular frame resting on the piston and passing beneath the cylinder, and a support Vfor the cylinder comprising an adapter to t the relief valve and a split support having two legs one on eachV side of the rectangular frame, the adapter supporting the support on the valve and the support supporting the cylinder on 'the adapter.
2. A jack for pulling relief valves comprising in combination a cylinder, a piston in the cylinder, a rectangular frame resting on theipiston and'passing beneath the cylinder, and a support forithe cylinder comprising an adapter to t the'relief valve and 'a split supporthaving twolegs 'oneon each side of the rectangular frame, ,the v'adapter supporting the support on the valve kandithe Isupport supporting the cylindercn the adapter.
3. A jack for ypulling .relief'valves comprising in 'combination a cylinder, a piston in thecylinder, a 4rectangular frame resting 'on the piston and passing beneath the cylinder, and az'support for the cylinder comprising a split supporthaving two legs one on each side ofthe ,rectangular frame.
4. A jack forpulling relief valvespomprising in combination a hydraulic cylinder, a piston in the cylinder, a pump for supplying pressure Yiluid to move the piston, a substantially :rectangular frame resting Yonl the A.piston and :passing Ibeneath the cylinder, a support: for the cylinderrcomprising an adapter having a cylindrical .portion threaded to fit the ,relief Avalve anda Yspacing support member, the adapter supporting the spacin'gsupport member onzthe Valve and the spacing 'support' member supporting the. cylinder on the adapter, saidspacing'support member being Vcut awayV to allow said rectangular frame to hang freely from saidpiston and to operate out of contact with said support, andrmeans. onrsaid rectangular frame below saidcylinder forsengagingla portion of said valve.
HOWARD .SIMONSON REFERENCES CITED The 4following references are -of-record in'the file of this patent:
UNITED STATES -PATENTS 'Number Name Date 985,213 Shigley -f Y Feb, 28, 1911 1,616,728 -Willo'ughby Y "Feb. 8;"1927 2,113,725 Goldman .'Apr. 12, 1938 KV2,178,901 Webster ..Nov." 7, 1939 A1,367,133 Guillery Feb. 1,:1921 2,227,961 Caughey I Janiy 7,1 1941 V'2,258,224 'Sheppard -a Coti-7, 1941 1,637,743 Fine Aug.i2," 1927 2,075,968 I-Ieydekampf f Apr.'6,i1937
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US506237A US2419293A (en) | 1943-10-14 | 1943-10-14 | Relief valve tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US506237A US2419293A (en) | 1943-10-14 | 1943-10-14 | Relief valve tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2419293A true US2419293A (en) | 1947-04-22 |
Family
ID=24013762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US506237A Expired - Lifetime US2419293A (en) | 1943-10-14 | 1943-10-14 | Relief valve tester |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2419293A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2585155A (en) * | 1949-10-29 | 1952-02-12 | Francolor Sa | Benzothiazole-2-dimethylsulfinamide and process for preparing the same |
| US2679160A (en) * | 1949-06-15 | 1954-05-25 | Charles W Welch | Actuating cylinder assembly test device |
| US2952151A (en) * | 1955-05-16 | 1960-09-13 | Phillips Petroleum Co | Safety device for use in testing relief valves on pressurized fluid containers |
| US3269170A (en) * | 1964-09-28 | 1966-08-30 | Edward H Sebring | Pressure relief valve testing apparatus |
| US3425269A (en) * | 1966-11-14 | 1969-02-04 | Brooks & Perkins | Lock tester for aircraft cargo handling system |
| EP0017365A1 (en) * | 1979-03-20 | 1980-10-15 | CROSBY VALVE & GAGE COMPANY | Apparatus for measuring the set pressure of a safety valve |
| US4349885A (en) * | 1979-03-20 | 1982-09-14 | Crosby Valve & Gage Company | Set pressure measuring system |
| EP0133797A2 (en) * | 1983-08-12 | 1985-03-06 | Greenwood Moore Limited | Valve testing |
| US4527415A (en) * | 1982-11-10 | 1985-07-09 | Electricite De France (Service National) | Apparatus for checking the set pressure of a safety valve |
| FR2568974A1 (en) * | 1984-08-10 | 1986-02-14 | Values Oriented Tech Inc | ASSISTANCE DEVICE FOR SAFETY VALVE |
| US4646556A (en) * | 1984-07-13 | 1987-03-03 | Framatome & Cie. | Process and apparatus for testing a pilot-operated safety valve |
| US4761999A (en) * | 1987-02-27 | 1988-08-09 | Crosby Valve & Gage Company | Set pressure verification device and method |
| US5275036A (en) * | 1991-07-01 | 1994-01-04 | Continental Field Machining Co., Inc. | Relief valve testing apparatus |
| US9528630B2 (en) | 2013-10-16 | 2016-12-27 | Dresser, Inc. | Apparatus for setting and verifying set point on a valve assembly |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US985213A (en) * | 1910-02-04 | 1911-02-28 | Cyrus C Shigley | Valve-tension scale. |
| US1367133A (en) * | 1918-06-10 | 1921-02-01 | Guillery Rene | Apparatus for making rapid tests of the hardness of metals |
| US1616728A (en) * | 1924-11-24 | 1927-02-08 | American Car & Foundry Co | Valve tester |
| US1637743A (en) * | 1926-05-10 | 1927-08-02 | William H Fine | Device for testing safety valves on tank cars |
| US2075968A (en) * | 1933-04-15 | 1937-04-06 | Baldwin Southwark Corp | Hydraulic load producing means |
| US2113725A (en) * | 1936-04-22 | 1938-04-12 | Oscar G Goldman | Coating bond testing apparatus and method |
| US2178901A (en) * | 1938-03-02 | 1939-11-07 | John F Webster | Combination relief valve and tester |
| US2227961A (en) * | 1938-12-01 | 1941-01-07 | Gen Electric | Valve testing apparatus |
| US2258224A (en) * | 1938-07-08 | 1941-10-07 | Gen Electric | Valve testing apparatus |
-
1943
- 1943-10-14 US US506237A patent/US2419293A/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US985213A (en) * | 1910-02-04 | 1911-02-28 | Cyrus C Shigley | Valve-tension scale. |
| US1367133A (en) * | 1918-06-10 | 1921-02-01 | Guillery Rene | Apparatus for making rapid tests of the hardness of metals |
| US1616728A (en) * | 1924-11-24 | 1927-02-08 | American Car & Foundry Co | Valve tester |
| US1637743A (en) * | 1926-05-10 | 1927-08-02 | William H Fine | Device for testing safety valves on tank cars |
| US2075968A (en) * | 1933-04-15 | 1937-04-06 | Baldwin Southwark Corp | Hydraulic load producing means |
| US2113725A (en) * | 1936-04-22 | 1938-04-12 | Oscar G Goldman | Coating bond testing apparatus and method |
| US2178901A (en) * | 1938-03-02 | 1939-11-07 | John F Webster | Combination relief valve and tester |
| US2258224A (en) * | 1938-07-08 | 1941-10-07 | Gen Electric | Valve testing apparatus |
| US2227961A (en) * | 1938-12-01 | 1941-01-07 | Gen Electric | Valve testing apparatus |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2679160A (en) * | 1949-06-15 | 1954-05-25 | Charles W Welch | Actuating cylinder assembly test device |
| US2585155A (en) * | 1949-10-29 | 1952-02-12 | Francolor Sa | Benzothiazole-2-dimethylsulfinamide and process for preparing the same |
| US2952151A (en) * | 1955-05-16 | 1960-09-13 | Phillips Petroleum Co | Safety device for use in testing relief valves on pressurized fluid containers |
| US3269170A (en) * | 1964-09-28 | 1966-08-30 | Edward H Sebring | Pressure relief valve testing apparatus |
| US3425269A (en) * | 1966-11-14 | 1969-02-04 | Brooks & Perkins | Lock tester for aircraft cargo handling system |
| EP0017365A1 (en) * | 1979-03-20 | 1980-10-15 | CROSBY VALVE & GAGE COMPANY | Apparatus for measuring the set pressure of a safety valve |
| FR2452041A1 (en) * | 1979-03-20 | 1980-10-17 | Crosby Valve & Gage | SYSTEM FOR MEASURING THE PRESET PRESSURE OF A VALVE |
| US4349885A (en) * | 1979-03-20 | 1982-09-14 | Crosby Valve & Gage Company | Set pressure measuring system |
| US4527415A (en) * | 1982-11-10 | 1985-07-09 | Electricite De France (Service National) | Apparatus for checking the set pressure of a safety valve |
| EP0133797A2 (en) * | 1983-08-12 | 1985-03-06 | Greenwood Moore Limited | Valve testing |
| EP0133797A3 (en) * | 1983-08-12 | 1985-10-02 | Greenwood Moore Limited | Valve testing |
| US4646556A (en) * | 1984-07-13 | 1987-03-03 | Framatome & Cie. | Process and apparatus for testing a pilot-operated safety valve |
| FR2568974A1 (en) * | 1984-08-10 | 1986-02-14 | Values Oriented Tech Inc | ASSISTANCE DEVICE FOR SAFETY VALVE |
| US4761999A (en) * | 1987-02-27 | 1988-08-09 | Crosby Valve & Gage Company | Set pressure verification device and method |
| WO1988006721A1 (en) * | 1987-02-27 | 1988-09-07 | Crosby Valve & Gage Company | Set pressure verification device and method |
| US5275036A (en) * | 1991-07-01 | 1994-01-04 | Continental Field Machining Co., Inc. | Relief valve testing apparatus |
| US9528630B2 (en) | 2013-10-16 | 2016-12-27 | Dresser, Inc. | Apparatus for setting and verifying set point on a valve assembly |
| US9851014B2 (en) | 2013-10-16 | 2017-12-26 | Dresser, Inc. | Apparatus for setting and verifying set point on a valve assembly |
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