CN104818956A - Gate plate locking device of blowout preventer - Google Patents
Gate plate locking device of blowout preventer Download PDFInfo
- Publication number
- CN104818956A CN104818956A CN201510215204.1A CN201510215204A CN104818956A CN 104818956 A CN104818956 A CN 104818956A CN 201510215204 A CN201510215204 A CN 201510215204A CN 104818956 A CN104818956 A CN 104818956A
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- China
- Prior art keywords
- locking
- hole
- locking device
- fluid cylinder
- flashboard
- 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.)
- Pending
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- 239000012530 fluid Substances 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 241001416181 Axis axis Species 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000010720 hydraulic oil Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Fluid-Damping Devices (AREA)
Abstract
A gate plate locking device of a blowout preventer comprises a housing, a lateral gate, a hydraulic cylinder, a gate plate spindle, a piston, a locking rod and a locking device. The locking device comprises a locking hydraulic cylinder, a locking piston and a display mechanism. A first hole communicated with a second hole is arranged inside the locking hydraulic cylinder. Two ends of the first hole are respectively provided with a locking end cap and an unlocking end cap. One end of the second hole is connected with the hydraulic cylinder; and the other end is enclosed by the display mechanism. The locking piston is provided with an inclined plane which can be matched with an end face of the locking rod when the locking piston is in a locking position. A hole which is communicated with a hole inside the locking rod is arranged inside the gate plate spindle along a vertical axis of the gate plate spindle. The gate plate locking device of the blowout preventer has the advantages that: 1, a sequence valve does not need to be used; 2, the locking piston is driven to compress by a gravitational force, an elastic force, a magnetic force, a fluid pressure or a force of any combination of the forces above, thereby getting rid of the dependency on the fluid pressure and simplifying the structure and the oil path, accordingly lowering down the processing cost and the failure rate, and increasing the reliability as well as the maintenance convenience.
Description
Technical field
The present invention relates to a kind of in the creeping into of soil layer or rock for sealing or the device of packing well or well, establish the flashboard locking device relating to a kind of preventer especially.
Background technology
The effect of ram preventer locking device is after preventer closing well, and locking ram block, outwards moves under the pressure preventing flashboard to fluctuate in well, ensures stability and the reliability of preventer shut-in well.Locking device is divided into manually with automatic, and the latter can be divided into electric locking device and hydraulic locking apparatus, and hydraulic locking apparatus account for great majority in the application of forced locking device.
Within 2007, publish " oil field equipment " the 36th volume the 10th phase case study of 1st ~ 4 pages " Ram Preventer Hydraulic Locking Device present Research " and in July, 2008 publication " oil drilling technology " the 36th paper " research of Ram Preventer Hydraulic Locking Device current status and prospect " these two sections of papers of volume the 4th phase on the basis that domestic and international hydraulic locking apparatus present Research is analyzed, describe design feature and the pluses and minuses of several different hydraulic locking apparatus in detail.Wherein, the inclined-plane piston self-locking structure that Cameron company applies at first, installing sequence valve additional after improving further, achieving and only using oil circuit just can control inclined-plane piston to unlock and piston recesses the priority action in well head direction, solve the problem of unblock poor reliability.2011 publish " oil field equipment " o. 11th 51st ~ 53 pages paper " improvement of ram preventer hydraulic automatic locking device " in author improve sequence valve, reduce sequence valve lost efficacy cause can not unlock, the fault rate that flashboard is not opened.Be 201380023697 at application number, Shen Qing Publication day is disclose a kind of valve that uses in the patent " preventer and using method thereof with locking column plug assembly " on January 14th, 2015 to control inclined-plane piston and unlock and piston recesses the mechanism of the priority action in well head direction.
Up to the present, inclined-plane piston self-locking mechanism is all coordinated by sequence valve to realize locking and unlocking motion, its weak point is that required parts are more, structure and oil circuit complexity, processing and inconvenient maintenance, locking fluid cylinder volume is large, and fault rate is high, must use hydraulic pressure ability activation ramp piston movement and the shortcomings such as locking.
Summary of the invention
Technical problem to be solved by this invention is the shortcoming overcoming prior art, provides that a kind of structure is simple, compact, easy-maintaining, failure rate is low, hydraulic actuating latching ram need not be relied on completely to move and the forced locking device of locking.
The object of the invention is to be achieved by the following technical programs:
A flashboard locking device for preventer, comprises housing, side door, fluid cylinder, flashboard axis, piston, check lock lever and locking device; Described locking device comprises locking fluid cylinder, latching ram, indication mechanism; Described locking fluid cylinder inside has the 1st hole and the 2nd hole to connect; The two ends in described 1st hole are respectively equipped with locking end cap and unlock end cap; Described 2nd one end, hole connects fluid cylinder, and the other end has indication mechanism to close; Have seal that chamber is closed in described 2nd hole and fluid cylinder in described locking fluid cylinder to isolate, movable locking bar can move back and forth in described 2nd hole; Described latching ram moves back and forth under external force between described 1st hole internal locking end and unblock end, and described locking fluid cylinder is divided into the unblock chamber of variable volume and the lock chambers of variable volume; Described latching ram has the inclined plane can mated with the end plane of described check lock lever when described latching ram is in locked position; It is characterized in that:
The hole along its y direction is had to be communicated with the hole in check lock lever in described flashboard axis.
Preferably, the angle between the 1st axially bored line of described locking fluid cylinder and the 2nd axially bored line is 67 ° ~ 90 °
Preferably, the 1st axially bored line of described locking fluid cylinder and the angle of its gravity vertical are 0 ° ~ 90 °.
Preferably, fluid pressure can be passed in the lock chambers in described locking fluid cylinder actuate latching ram and move to locking end.
Preferably, described check lock lever end plane and its longitudinal axis axis angle are 67 ° ~ 90 °.
Preferably, described check lock lever end also comprises latch segment.
Preferably, there is a through hole described latch segment inside.
Preferably, described latching ram cylindrical has skewed slot, the angle of described skewed slot inclined plane and latching ram longitudinal axis axis is 13 ° ~ 23 °.
Preferably, described external force comprises any combination of fluid pressure, gravity, elastic force, magnetic force or described power.
Compared with prior art, the present invention has following beneficial effect: 1. when not using sequence valve, achieves the priority action that latching ram and piston recess well head direction equally, simplifies the structure, and makes locking fluid cylinder smaller and more exquisite.2. rely on the power of any combination of gravity, elastic force, magnetic force, fluid pressure or described power to actuate latching ram to tighten, break away from the dependence of fluid pressure, simplify the structure and oil circuit, processing cost and fault rate are reduced, reliability, maintenance convenience improve.
Accompanying drawing explanation
The above and other feature of the present invention, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 is the structural representation that in the embodiment one of the flashboard locking device of preventer of the present invention, check lock lever is in released state.
Fig. 2 is the structural representation that in the embodiment one of the flashboard locking device of preventer of the present invention, check lock lever is in locking state.
Fig. 3 is the structural representation that in the embodiment two of the flashboard locking device of preventer of the present invention, check lock lever is in released state.
Fig. 4 is the structural representation that in the embodiment two of the flashboard locking device of preventer of the present invention, check lock lever is in locking state.
Detailed description of the invention
The above and other feature of the present invention, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
embodiment 1
Fig. 1 is the structural representation that in the embodiment one of the flashboard locking device of preventer of the present invention, check lock lever is in released state.The flashboard locking device of preventer of the present invention, comprises housing 101, side door 102, fluid cylinder 103, flashboard axis 104, piston 105, check lock lever 110 and locking device 200, and locking device 200 comprises locking fluid cylinder 210, latching ram 220, indication mechanism 230.Locking fluid cylinder 210 inside has the 1st hole 211 and the 2nd hole 212 to connect, and the two ends in the 1st hole 211 are respectively equipped with locking end cap 213 and unlock one end, end cap the 214,2nd hole 212 and connect fluid cylinder 103, and the other end has indication mechanism 230 to close.Have seal 106 that chamber 107 is closed with fluid cylinder in described 2nd hole 212 in locking fluid cylinder 210 to isolate, movable locking bar 110 can move back and forth in the 2nd hole 212.Latching ram 220 moves back and forth under external force between the 1st hole 211 internal locking end 217 and unblock end 218, and described locking fluid cylinder 210 is divided into the unblock chamber 215 of variable volume and the lock chambers 216 of variable volume.Latching ram 220 has can contact the inclined plane 221 of fitting with the end plane 111 of described check lock lever 110 when described latching ram 220 is in locked position.The hole 108 along its y direction is had to be communicated with the hole 114 in check lock lever 110 in flashboard axis 104.
Angle between locking fluid cylinder 210 the 1st hole 211 axis and the 2nd hole 212 axis is 90 °, and the angle of the 1st hole 211 axis and its gravity vertical is 0 °.After chamber 107, fluid cylinder pass passes into hydraulic oil, promote piston 105 and also drive check lock lever 110 to the motion of well head direction, lock chambers 216 is hedged off from the outer world, from start to finish without hydraulic oil.Latching ram 220 only relies on institute's gravitate and moves to locking end 217, and 18 ° of inclined planes 111 of final latching ram 220 contact with 18 ° of inclined planes of the latch segment 112 of check lock lever 110 end and fit.After hydraulic coupling is removed, the frictional force between latching ram 220 and latch segment 112 is relied on to continue to keep self-locking state.
Fig. 2 is the structural representation that in the embodiment one of the flashboard locking device of preventer of the present invention, check lock lever is in locking state.When fluid cylinder begin to speak 109 pass into hydraulic oil after, hydraulic oil is by entering the unblock chamber 215 of locking fluid cylinder 210 with the hole 108 be connected in lock shaft 110 in flashboard axis 104, promote latching ram 220 to move to unblock end 218, due to fluid cylinder begin to speak 109 hydraulic coupling cannot promote piston 105 move because of the self-locking action of latching ram 220, hydraulic oil only has and first promotes latching ram 220 and back piston 105 could move.Thus achieve latching ram 220 and first unlock, the priority action of motion after piston 105.
embodiment 2
Fig. 3 is the structural representation that in the embodiment two of the flashboard locking device of preventer of the present invention, check lock lever is in released state.Angle between locking fluid cylinder 210 the 1st hole 211 axis and the 2nd axially bored line is 72 °, and the angle of the 1st axially bored line and its gravity vertical is 18 °.After chamber 107, fluid cylinder pass passes into hydraulic oil, promote piston 105 and drive check lock lever 110 to move to well head direction, now chamber 107, fluid cylinder pass is communicated with lock chambers 216, hydraulic oil also enters lock chambers 216 simultaneously, latching ram 220 moves to locking end 217 under the force action of hydraulic coupling and gravity, and 18 ° of inclined planes of final latching ram 220 contact with 0 ° of inclined plane 111 of the latch segment 112 of check lock lever 110 end and fit.After hydraulic coupling is removed, check lock lever 110 is subject to the elastic force effect of gate rubber core and moves back to the direction away from well head, but is subject to the obstruction on the inclined plane of latching ram 220 and cannot continues to retreat, thus achieves self-locking.
Fig. 4 is the structural representation that in the embodiment two of the flashboard locking device of preventer of the present invention, check lock lever is in locking state.When fluid cylinder begin to speak 109 pass into hydraulic oil after, hydraulic oil is by entering the unblock chamber 215 of locking fluid cylinder 210 with the hole 108 be connected in lock shaft 110 in flashboard axis 104, promote latching ram 220 to move to unblock end 218, due to fluid cylinder begin to speak 109 hydraulic coupling cannot promote piston 105 move because of the self-locking action of latching ram 220, hydraulic oil only has and first promotes latching ram 220 and back piston 105 could move.Thus achieve latching ram 220 and first unlock, the priority action of motion after piston 105.
In sum, compared with prior art, the present invention can when not using sequence valve, achieves the priority action that latching ram and piston recess well head direction equally, simplify the structure, make locking fluid cylinder smaller and more exquisite.The power of any combination of gravity, elastic force, magnetic force, fluid pressure or described power can be relied on to tighten to actuate latching ram, break away from the dependence of fluid pressure, simplify the structure and oil circuit, processing cost and fault rate are reduced, reliability, maintenance convenience improve.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection scope of the present invention.
Claims (9)
1. a flashboard locking device for preventer, comprises housing, side door, fluid cylinder, flashboard axis, piston, check lock lever and locking device; Described locking device comprises locking fluid cylinder, latching ram, indication mechanism; Described locking fluid cylinder inside has the 1st hole and the 2nd hole to connect; The two ends in described 1st hole are respectively equipped with locking end cap and unlock end cap; Described 2nd one end, hole connects fluid cylinder, and the other end has indication mechanism to close; Have seal that chamber is closed in described 2nd hole and fluid cylinder in described locking fluid cylinder to isolate, movable locking bar can move back and forth in described 2nd hole; Described latching ram moves back and forth under external force between described 1st hole internal locking end and unblock end, and described locking fluid cylinder is divided into the unblock chamber of variable volume and the lock chambers of variable volume; Described latching ram has the inclined plane can mated with the end plane of described check lock lever when described latching ram is in locked position; It is characterized in that: in described flashboard axis, have the hole along its y direction to be communicated with the hole in check lock lever.
2. the flashboard locking device of preventer according to claim 1, is characterized in that the angle between the 1st axially bored line of described locking fluid cylinder and the 2nd axially bored line is 67 ° ~ 90 °.
3. the flashboard locking device of preventer according to claim 1, is characterized in that the 1st axially bored line of described locking fluid cylinder and the angle of its gravity vertical are 0 ° ~ 90 °.
4. the flashboard locking device of preventer according to claim 1, is characterized in that can passing in the lock chambers in described locking fluid cylinder fluid pressure and actuates latching ram and move to locking end.
5. the flashboard locking device of preventer according to claim 1, is characterized in that described check lock lever end plane and its longitudinal axis axis angle are 67 ° ~ 90 °.
6. the flashboard locking device of preventer according to claim 1, is characterized in that described check lock lever end also comprises latch segment.
7. there is a through hole latch segment inside according to claim 6.
8. the flashboard locking device of preventer according to claim 1, is characterized in that described latching ram cylindrical has skewed slot, and the angle of described skewed slot inclined plane and latching ram longitudinal axis axis is 13 ° ~ 23 °.
9. the flashboard locking device of preventer according to claim 1, is characterized in that described external force comprises any combination of fluid pressure, gravity, elastic force, magnetic force or described power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215204.1A CN104818956A (en) | 2015-04-30 | 2015-04-30 | Gate plate locking device of blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510215204.1A CN104818956A (en) | 2015-04-30 | 2015-04-30 | Gate plate locking device of blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818956A true CN104818956A (en) | 2015-08-05 |
Family
ID=53729409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510215204.1A Pending CN104818956A (en) | 2015-04-30 | 2015-04-30 | Gate plate locking device of blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104818956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118110460A (en) * | 2024-04-28 | 2024-05-31 | 威飞海洋装备制造有限公司 | Ocean platform drilling blowout preventer system and ocean platform drilling machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628718Y (en) * | 2003-07-29 | 2004-07-28 | 广汉市思明石油钻采设备配套有限公司 | Safety locking device for hydraulic ram blosout preventer |
| US20060169933A1 (en) * | 2005-02-01 | 2006-08-03 | Le Tri C | Blowout preventer and locking mechanism |
| CN200952376Y (en) * | 2006-10-16 | 2007-09-26 | 上海神开石油化工装备集团有限公司 | Automatic hydraulic locking device of flashboard blow-out preventer for petroleum and natural gas drilling |
| CN103362896A (en) * | 2013-07-23 | 2013-10-23 | 云南兴长江实业有限公司 | Safe locking device suitable for hydraulic oil cylinder |
-
2015
- 2015-04-30 CN CN201510215204.1A patent/CN104818956A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628718Y (en) * | 2003-07-29 | 2004-07-28 | 广汉市思明石油钻采设备配套有限公司 | Safety locking device for hydraulic ram blosout preventer |
| US20060169933A1 (en) * | 2005-02-01 | 2006-08-03 | Le Tri C | Blowout preventer and locking mechanism |
| CN200952376Y (en) * | 2006-10-16 | 2007-09-26 | 上海神开石油化工装备集团有限公司 | Automatic hydraulic locking device of flashboard blow-out preventer for petroleum and natural gas drilling |
| CN103362896A (en) * | 2013-07-23 | 2013-10-23 | 云南兴长江实业有限公司 | Safe locking device suitable for hydraulic oil cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118110460A (en) * | 2024-04-28 | 2024-05-31 | 威飞海洋装备制造有限公司 | Ocean platform drilling blowout preventer system and ocean platform drilling machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |