CN101942972B - Balancer for protecting joint - Google Patents
Balancer for protecting joint Download PDFInfo
- Publication number
- CN101942972B CN101942972B CN 201010259868 CN201010259868A CN101942972B CN 101942972 B CN101942972 B CN 101942972B CN 201010259868 CN201010259868 CN 201010259868 CN 201010259868 A CN201010259868 A CN 201010259868A CN 101942972 B CN101942972 B CN 101942972B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- hollow shaft
- spring
- connecting key
- balancer
- 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 - Fee Related
Links
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a balancer for a protecting joint. The balancer comprises a first sleeve (1), a second sleeve (2) and a hollow shaft (3), wherein the hollow shaft (3) is sleeved in a cavity formed by the first sleeve (1) and the second sleeve (2); a spring (4) is sleeved on the hollow shaft (3); one end of the spring (4) is contacted with an inner wall of the second sleeve (2), and the other end of the spring (4) is simultaneously contacted with the side wall of a convex edge on the hollow shaft (3); and the outer ring of the convex edge on the hollow shaft (3) is provided with a hollow shaft connecting key (3a). The balancer has the advantages of transferring torque, playing a role in buffering during unfastening to avoid damage to threads, coordinating the unfastening of the protecting joint during the unfastening, compensating the clearance of a connecting screw thread through the return of the spring and ensuring smooth unfastening, along with simple structure, low manufacturing cost, small size and light weight.
Description
Technical field
The invention belongs to petroleum and natural gas drilling equipment field, relate to a kind of equalizer that is used to protect joint concretely.
Background technology
The damage of screw thread when unloading the joint button on preventing, and when shackle, help male joint from the box joint, to eject, be necessary for drilling rod provides 125mm screw thread compensation stroke at axial direction bascule.Existing bascule has following deficiency:
1) conventional rig is to realize above requirement by the balance sysmte that two buffering fluid cylinders that drive on hook spring or top are formed, but balance sysmte complex structure, weight that two buffering fluid cylinders that drive on hook spring and top are formed are big, manufacturing cost is high, can not transfer torque.
2) limited by the singles rig hoisting depth, drive on hook that part is long-pending all very big, length is very long or top all is unpractical.
3) kind of drive of singles rig whole system has also determined to join hook (can not transfer torque), can only join a straight driving force water tap of simple and easy hydraulic pressure that volume is little, highly low, and this power swivel is not with balance sysmte, does not have the screw thread compensate function.
Summary of the invention
The purpose of this invention is to provide one simple in structure, low cost of manufacture, volume is little, in light weight, and the equalizer that is used to protect joint that can transfer torque.
Technical scheme of the present invention is as follows:
This equalizer comprises first sleeve, second sleeve and hollow shaft, described hollow shaft sleeve is contained in described first sleeve and the formed cavity of second sleeve, be set with spring on the described hollow shaft, described spring one end and the contacted while other end of the inside wall of described second sleeve contact with convex edge sidewall on the described hollow shaft, outer ring, convex edge on the described hollow shaft has the hollow shaft connecting key, the sleeve connecting key transferring power that has by described hollow shaft connecting key and described second sleeve lining.
Adopt said structure that first sleeve is connected with power swivel; hollow shaft connects the protection joint; like this when providing power to link closely by power swivel; the effect that drilling rod that the drilling rod that protected tip side connects connects or gravity involve can be compressed spring, and spring can play the damage that certain cushioning effect prevents connecting thread in the process of linking closely.When shackle, the restoring force of spring can play the effect of jack-up to hollow shaft and connected protection head, assists shackle and certain screw thread gap compensation is provided.Power swivel drives first sleeve and second sleeve simultaneously, realizes the transmission of whole equalizer moment of torsion by the spline fitted between second sleeve and the hollow shaft.
First sleeve and second sleeve are bolted to connection.
Described hollow shaft connecting key all adopts spline to be connected with the sleeve connecting key.
Beneficial effect: the present invention is simple in structure, low cost of manufacture, volume are little, in light weight; and the energy transfer torque; can play buffering and prevent the purpose of thread damage unloading to smash; unload and smash and can assist to protect the joint shackle; answer by spring compensates the gap of thread, reaches smooth shackle.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 structural representation of the present invention;
Fig. 2 is for installing overall pattern.
The specific embodiment
As Fig. 1; shown in 2: a kind of equalizer that is used to protect joint; this equalizer comprises first sleeve 1; second sleeve 2 and hollow shaft 3; described hollow shaft 3 is sleeved in described first sleeve 1 and second sleeve, the 2 formed cavitys; be set with spring 4 on the described hollow shaft 3; contact with the inside wall of described second sleeve 2 other end simultaneously of described spring 4 one ends contacts with convex edge sidewall on the described hollow shaft 3; outer ring, convex edge on the described hollow shaft 3 has hollow shaft connecting key 3a, and described hollow shaft connecting key 3a is meshed with the sleeve connecting key 2a that described second sleeve, 2 inwalls have.Wherein the upper end of first sleeve 1 is connected with the central tube lower end of described power swivel 6, and hollow shaft 3 lower ends connect protection joint 7.
Fixedly connected by bolt 5 between first sleeve 1 and second sleeve 2.
Described hollow shaft connecting key 3a all adopts spline to be connected with sleeve connecting key 2a.
Claims (3)
1. equalizer that is used to protect joint; it is characterized in that: this equalizer comprises first sleeve (1); second sleeve (2) and hollow shaft (3); described hollow shaft (3) is sleeved in described first sleeve (1) and the formed cavity of second sleeve (2); be set with spring (4) on the described hollow shaft (3); described spring (4) one ends and the contacted while other end of the inside wall of described second sleeve (2) contact with convex edge sidewall on the described hollow shaft (3); outer ring, convex edge on the described hollow shaft (3) has hollow shaft connecting key (3a), sleeve connecting key (2a) transferring power that has by described hollow shaft connecting key (3a) and described second sleeve (2) inwall.
2. a kind of equalizer that is used to protect joint according to claim 1 is characterized in that: first sleeve (1) is fixedlyed connected by bolt (5) with second sleeve (2).
3. a kind of equalizer that is used to protect joint according to claim 1 is characterized in that: described hollow shaft connecting key (3a) all adopts spline to be connected with sleeve connecting key (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010259868 CN101942972B (en) | 2010-08-23 | 2010-08-23 | Balancer for protecting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010259868 CN101942972B (en) | 2010-08-23 | 2010-08-23 | Balancer for protecting joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101942972A CN101942972A (en) | 2011-01-12 |
| CN101942972B true CN101942972B (en) | 2013-07-31 |
Family
ID=43435154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010259868 Expired - Fee Related CN101942972B (en) | 2010-08-23 | 2010-08-23 | Balancer for protecting joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101942972B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561955B (en) * | 2012-02-10 | 2014-01-08 | 江苏省无锡探矿机械总厂有限公司 | Thread protector for drilling rig |
| CN102536130B (en) * | 2012-02-10 | 2014-01-15 | 江苏省无锡探矿机械总厂有限公司 | Rotation type joint device for drilling machine |
| CN108868663B (en) * | 2018-07-23 | 2024-02-27 | 四川宏华石油设备有限公司 | Novel hydraulic top drive system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3715900A1 (en) * | 1987-05-13 | 1988-11-24 | Otis Eng Co | Separating device for casing strings of oil production wells |
| CN2138186Y (en) * | 1992-10-14 | 1993-07-14 | 邹连阳 | Sucker rod protector |
| US5507349A (en) * | 1994-12-19 | 1996-04-16 | Halliburton Company | Downhole coiled tubing latch |
| CN2475821Y (en) * | 2001-03-16 | 2002-02-06 | 北京石油机械厂 | A vibration-reducing device for drilling column |
| CN2767638Y (en) * | 2005-02-03 | 2006-03-29 | 中国石油天然气集团公司 | Air mechanical vibration-damper |
| CN201236634Y (en) * | 2008-08-11 | 2009-05-13 | 中国海洋石油总公司 | Reverse circulation connector |
| CN101705794A (en) * | 2009-11-27 | 2010-05-12 | 西南石油大学 | Bidirectional anti-fatigue short circuit for drill column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7878272B2 (en) * | 2008-03-04 | 2011-02-01 | Smith International, Inc. | Forced balanced system |
-
2010
- 2010-08-23 CN CN 201010259868 patent/CN101942972B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3715900A1 (en) * | 1987-05-13 | 1988-11-24 | Otis Eng Co | Separating device for casing strings of oil production wells |
| CN2138186Y (en) * | 1992-10-14 | 1993-07-14 | 邹连阳 | Sucker rod protector |
| US5507349A (en) * | 1994-12-19 | 1996-04-16 | Halliburton Company | Downhole coiled tubing latch |
| CN2475821Y (en) * | 2001-03-16 | 2002-02-06 | 北京石油机械厂 | A vibration-reducing device for drilling column |
| CN2767638Y (en) * | 2005-02-03 | 2006-03-29 | 中国石油天然气集团公司 | Air mechanical vibration-damper |
| CN201236634Y (en) * | 2008-08-11 | 2009-05-13 | 中国海洋石油总公司 | Reverse circulation connector |
| CN101705794A (en) * | 2009-11-27 | 2010-05-12 | 西南石油大学 | Bidirectional anti-fatigue short circuit for drill column |
Non-Patent Citations (1)
| Title |
|---|
| 李长葆.一种能控制钻压同时又能保护钻柱的平衡器.《石油机械》.1982,(第06期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101942972A (en) | 2011-01-12 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |