US3677520A - Safety apparatus for drilling rig - Google Patents
Safety apparatus for drilling rig Download PDFInfo
- Publication number
- US3677520A US3677520A US111477A US3677520DA US3677520A US 3677520 A US3677520 A US 3677520A US 111477 A US111477 A US 111477A US 3677520D A US3677520D A US 3677520DA US 3677520 A US3677520 A US 3677520A
- Authority
- US
- United States
- Prior art keywords
- valve
- toggle
- air
- inlet
- rig
- 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
- 238000005553 drilling Methods 0.000 title claims abstract description 15
- 238000013022 venting Methods 0.000 claims abstract description 5
- 230000003213 activating effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
- B66D3/24—Applications of limit switches
Definitions
- a relay air valve normally allowing the passage of air to the toggle valve inlet for automatic operation but when actuated closing the air supply to the toggle valve and venting the air from the toggle inlet, and a manually actuated second air valve for actuating the relay valve with spring means normally holding the second valve in the closed position whereby the operator must constantly hold the second valve in order to override the toggle valve automatic control.
- the present invention is directed to providing an improved apparatus in which the operator may override the automatic safety device so as to handle extra long lengths of drill pipe or drill collars but without disassembling the safety device. And while doing so the operator is made aware that he is overriding the automatic safety protection, and after the longer strings of pipe have been handled, the automatic safety device will again be ready to limit the movement of the traveling block.
- the present invention is directed to the improvement in an apparatus for preventing the traveling block of a drilling rig from being drawn into the crown of the rig in which a toggle valve controls the power to the rig brake and rig clutch by providing a manual override for allowing longer lengths of drill pipe to be handled by the drilling rig without actuation of the toggle valve.
- Still a further object of the present invention is the provision of a manual override requiring the operator to maintain continuous actuation of the override so that he is constantly aware that he is bypassing the automatic safety stop of the toggle valve.
- Still a further object is the provision of a manual override including a relay air valve connected to the toggle valve inlet with spring means normally holding the relay valve in the open position for supplying air to the toggle valve for automatic operation, but which when actuated closes the air supply to the toggle valve and vents the air from the toggle valve, and includes a second manually actuated valve for actuating the relay valve with spring means normally holding the second valve in the closed position.
- FIG. I is a schematic view showing the apparatus of the present invention in position for automatically limiting the upward travel of the traveling block
- the reference numeral generally indicates a drawworks drum of a conventional drilling rig on which a cable 12 is being wound.
- the drawworks is conventional and is part of a conventional drilling rig having a traveling block (not shown) which raises and lowers lengths of drilling pipe and no further description is believed to be necessary.
- the drum I0 is provided with a suitable power source (not shown) and a clutch 14 and brake 16, all of which is conventional.
- An air safety toggle valve 18 is provided positioned over the drum l0 and includes a stem 20 which is actuated when a sufficient number of turns of the cable 12 have been wound upon the drum 10 thereby indicating that the traveling block is at a predetermined level.
- a spring 23 normally holds a valve element 21 seated preventing passage of air from inlet 22 to outlet 26. Movement of the stem 20 moves valve element 21 to the open position as shown in FIG. I overcoming the spring 23 allowing passage of air through the toggle valve 18.
- the toggle switch is more fully described in U.S. Pat. No. 2,683,020.
- a valve 24 is provided in the inlet line 22 of the toggle valve 18 with its outlet connected to the inlet of valve 18.
- Valve 24 is normally held in the open position by a spring and is closed and vented in the second position.
- Valve 24 is pneumatically -moved to the second position and may be any conventional valve such as C. Jim Stewart & Stevenson, Inc. Part No. 20100.
- a manually actuated valve 40 is provided which is manually actuated by a lever 42 which is normally held in the closed and vented position 48 by a spring 447
- Valve 40 is a two-way valve having an air inlet 46 connected to an air source. Valve 40 is moved to the open position 50 by manually actuating lever 42.
- Valve 40 is a conventional valve such as C. Jim Stewart & Stevenson, Inc.
- Valve No. 49600 The outlet from the valve 40 is connected to valve 24.
- valve 24 When valve 40 is actuated, valve 24 is in turn pneumatically actuated.
- Valve 24 is a normally open valve as shown in FIG. I and includes an open position and a closed and vented position 62. Normally, the valve is in the open position as shown positioned in FIG. 1 by the action of spring 25 to allow the passage of air therethrough. However, when the valve 24 is actuated by the valve 40 and moved to the second position 62 passage of air to toggle valve I8 is stopped and in fact air is vented from the inlet 22 of the toggle 18 thereby preventing the toggle valve 18 from automatically stopping the drum 10 even though the stem 20 is engaged by a layer of cable 12.
- valve 18 After the special lengths of pipe have been handled, the stem 20 of the toggle valve 18 may be placed back in the vertical position thereby activating the valve 18 and valve 40 may be released thereby deactuating valve 24. The valves will then be returned to their initial position and the apparatus is ready to operate again automatically. The return of valve 40 to its original position by the spring 44 will bleed the air between valve 40 and valve 24 through the vent position 48 in valve 40 to atmosphere.
- the present invention is well adapted to carry out the objects and attain the ends and advantages mentioned as well as others inherent therein.
- a first two-way air valve said valve including an inlet, an outlet and a vent, said valve outlet being connected to the toggle valve inlet, said valve including first spring means normally holding the inlet connected to the outlet for normally supplying air to the toggle inlet for automatic operation, said first valve when actuated having the inlet closed and the outlet connected to the vent, and
- a second manually actuated two-way valve for actuating the first valve, said second valve including an inlet, an outlet and a vent, the outlet being connected to the first valve, and the inlet connected to an air source, and spring means yieldably holding the inlet closed and the outlet connected to the vent, and manual actuating means for overcoming the second spring means and opening the second valve to supply air to and actuate the first valve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11147771A | 1971-02-01 | 1971-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3677520A true US3677520A (en) | 1972-07-18 |
Family
ID=22338774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US111477A Expired - Lifetime US3677520A (en) | 1971-02-01 | 1971-02-01 | Safety apparatus for drilling rig |
Country Status (1)
Country | Link |
---|---|
US (1) | US3677520A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284253A (en) * | 1979-10-01 | 1981-08-18 | Uribe Jorge R | Pneumatic brake actuating system |
US4448394A (en) * | 1982-09-30 | 1984-05-15 | Koomey, Inc. | High low safety apparatus for drilling rigs |
US6135421A (en) * | 1999-10-29 | 2000-10-24 | Mhe Technologies, Inc. | Hoist with proximity limit switches |
WO2002049955A1 (en) * | 2000-12-20 | 2002-06-27 | Mtm I Årjäng Aktiebolag | Lifting device |
US20100147588A1 (en) * | 2008-12-15 | 2010-06-17 | Terry William A | Device and Method Providing Redundant Automatic Clutch Release and Engine Shut Down on a Drilling or Production Rig |
US20140091268A1 (en) * | 2012-09-28 | 2014-04-03 | Parker-Hannifin Corporation | Constant Pull Winch Controls |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502710A (en) * | 1946-04-02 | 1950-04-04 | Emsco Derrick & Equip Co | Safety stop for drum travel |
US2683020A (en) * | 1953-10-09 | 1954-07-06 | Nickle Johnson | Safety device |
DE1161401B (en) * | 1961-05-23 | 1964-01-16 | Kampnagel Ag Vormals Nagel & K | Control device for hoist drives to regulate the load-holding zero position |
US3370601A (en) * | 1964-01-02 | 1968-02-27 | Ohio Brass Co | Valve for controlling the rate of movement of a fluid powered motor unit |
-
1971
- 1971-02-01 US US111477A patent/US3677520A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2502710A (en) * | 1946-04-02 | 1950-04-04 | Emsco Derrick & Equip Co | Safety stop for drum travel |
US2683020A (en) * | 1953-10-09 | 1954-07-06 | Nickle Johnson | Safety device |
DE1161401B (en) * | 1961-05-23 | 1964-01-16 | Kampnagel Ag Vormals Nagel & K | Control device for hoist drives to regulate the load-holding zero position |
US3370601A (en) * | 1964-01-02 | 1968-02-27 | Ohio Brass Co | Valve for controlling the rate of movement of a fluid powered motor unit |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284253A (en) * | 1979-10-01 | 1981-08-18 | Uribe Jorge R | Pneumatic brake actuating system |
US4448394A (en) * | 1982-09-30 | 1984-05-15 | Koomey, Inc. | High low safety apparatus for drilling rigs |
US6135421A (en) * | 1999-10-29 | 2000-10-24 | Mhe Technologies, Inc. | Hoist with proximity limit switches |
WO2002049955A1 (en) * | 2000-12-20 | 2002-06-27 | Mtm I Årjäng Aktiebolag | Lifting device |
US20040108498A1 (en) * | 2000-12-20 | 2004-06-10 | Henrik Andreasson | Lifting device |
US6916015B2 (en) | 2000-12-20 | 2005-07-12 | Ebl Systems Aktiebolag | Lifting device |
US20100147588A1 (en) * | 2008-12-15 | 2010-06-17 | Terry William A | Device and Method Providing Redundant Automatic Clutch Release and Engine Shut Down on a Drilling or Production Rig |
US8128067B2 (en) | 2008-12-15 | 2012-03-06 | Terry William A | Device and method providing redundant automatic clutch release and engine shut down on a drilling or production rig |
US20140091268A1 (en) * | 2012-09-28 | 2014-04-03 | Parker-Hannifin Corporation | Constant Pull Winch Controls |
US9908756B2 (en) * | 2012-09-28 | 2018-03-06 | Parker-Hannifin Corporation | Constant pull winch controls |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NL INDUSTRIES, INC., A CORP. OF NJ, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:C JIM STEWART & STEVENSON INC.;REEL/FRAME:003883/0256 Effective date: 19810706 Owner name: NL INDUSTRIES, INC., 1230 AVENUE OF THE AMERICAS, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:C JIM STEWART & STEVENSON INC.;REEL/FRAME:003883/0256 Effective date: 19810706 |
|
AS | Assignment |
Owner name: NL INDUSTRIES, INC., 1230 AVENUE OF THE AMERICAS, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:C. JIM STEWART & STEVENSON, INC.;REEL/FRAME:003967/0240 Effective date: 19780323 |
|
AS | Assignment |
Owner name: BAROID TECHNOLOGY, INC., DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NL INDUSTRIES, INC., A NJ CORP.;REEL/FRAME:005091/0020 Effective date: 19890210 |
|
AS | Assignment |
Owner name: CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE Free format text: SECURITY INTEREST;ASSIGNOR:BAROID CORPORATION, A CORP. OF DE.;REEL/FRAME:005196/0501 Effective date: 19881222 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: BAROID CORPORATION, TEXAS Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CHASE MANHATTAN BANK, THE;REEL/FRAME:006085/0590 Effective date: 19911021 |