CN102536112A - Sealable screw drill transmission shaft - Google Patents
Sealable screw drill transmission shaft Download PDFInfo
- Publication number
- CN102536112A CN102536112A CN2012100359918A CN201210035991A CN102536112A CN 102536112 A CN102536112 A CN 102536112A CN 2012100359918 A CN2012100359918 A CN 2012100359918A CN 201210035991 A CN201210035991 A CN 201210035991A CN 102536112 A CN102536112 A CN 102536112A
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- shell
- housing
- power transmission
- sealing device
- 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
Links
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a sealable screw drill transmission shaft. The sealable screw drill transmission shaft comprises a transmission shaft, an upper bearing and a shell, wherein the shell is sleeved outside the transmission shaft, the upper bearing is installed between the transmission shaft and the shell, the shell is provided with a pressure relief hole, the upper part of the transmission shaft is in clearance fit with the upper part of the shell, the pressure relief hole is below the clearance fit part, an upper sealing device is installed on the upper bearing, the upper sealing device is below the pressure relief hole, a pressure balancer is installed in the shell, the part corresponding to the pressure balancer, of the shell is provided with a pressure balance hole, a lower sealing device is installed between the lower part of the shell and the transmission shaft, a sealed cavity is formed between the transmission shaft and the shell, lubricant is filled in the sealed cavity, two sets of bearings do not contact with the mud with an abrasive material, the two sets of bearings are fully lubricated, the transmission shaft can not be worn, the service life of the transmission shaft can be greatly increased, multiple tripping operations caused by the frequent replacement of the screw drill transmission shaft are not required, and the drilling and repairing period of the well is short.
Description
Technical field
The present invention is the corollary equipment on the helicoid hydraulic motor used of oil field drilling and repairing well, but is a kind of closed spiro rod drilling tool power transmission shaft.
Background technology
Be full of mud between present screw drill transmission shaft and the housing, owing to contain abrasive material, especially severe in the mud so screw drill transmission shaft weares and teares at work; Have only tens of hours general application life, needs often to change screw drill transmission shaft and could accomplish drilling and repairing well, causes in the drilling and repairing well process to make a trip often; Engineering quantity is big, inefficiency, and completion period is long; The manpower and materials that drop into are many, and economic benefit is bad.
Summary of the invention
But the objective of the invention is to design a kind of closed spiro rod drilling tool power transmission shaft, overcome the deficiency of prior art, significantly prolong its application life, increase economic efficiency.
The objective of the invention is to realize like this: comprise power transmission shaft, upper bearing (metal), housing, housing is sleeved on outside the power transmission shaft, installs bearing between power transmission shaft and the housing; Have relief hole on the housing; Power transmission shaft top cooperates with the housing upper gap, and relief hole is under the matched in clearance, installs sealing device on the upper bearing (metal); Upper sealing device is under the relief hole; Pressurizer is installed in the housing, and the place has pressure compensation opening at housing corresponding pressure equalizer, between lower housing portion and the power transmission shaft lower sealing device is installed.
The invention has the beneficial effects as follows: be between power transmission shaft and the housing to charge into lubrication oil in the enclosed cavity by enclosed cavity, two groups of bearings do not contact with the mud that contains abrasive material; Two groups of bearings obtain sufficient lubrication, and power transmission shaft can not be worn, and can increase substantially the application life of power transmission shaft; Need not be because of often changing the screw drill transmission shaft multiple trips, engineering quantity significantly reduces, and the drilling and repairing well duration is short; Use manpower and material resources sparingly, have remarkable economic efficiency.
Description of drawings
Fig. 1 is an assembling drawing of the present invention.
The specific embodiment
Below in conjunction with Fig. 1 embodiments of the invention are described.
Embodiments of the invention are as shown in the figure, comprise power transmission shaft 1, upper bearing (metal) 4, housing 5, lower bearing 8, and housing 5 is sleeved on outside the power transmission shaft 1; Install bearing 4, lower bearing 8 between power transmission shaft 1 and the housing 5, have relief hole 2 on the housing 5, power transmission shaft 1 top cooperates with housing 5 upper gap; Relief hole 2 is under the matched in clearance; Install sealing device 3 on the upper bearing (metal) 4, upper sealing device 3 is under the relief hole 2, and pressurizer 6 is installed in the housing 5; 6 places have pressure compensation opening 7 at housing 5 corresponding pressure equalizers, and lower sealing device 9 is installed between housing 5 bottoms and the power transmission shaft 1.Upper sealing device 3, lower sealing device 9 are mechanical seal.Upper bearing (metal) 4 is four spot contact bearings, and lower bearing 8 is a rolling bearing.Can uneasiness load bearing 8 during enforcement, the purpose that lower bearing 8 is installed is in order to increase stability.
When the present invention works, power transmission shaft 1 rotation, a small amount of high-pressure slurry releases from relief hole 2 through the gap on power transmission shaft 1 top and housing 5 tops.Relief hole 2, pressure compensation opening 7 all equate with housing 5 external pressures; Pressurizer 6 makes pressure compensation opening 7 equate with inside cavity pressure, finally makes the cavity external and internal pressure equate, the seal pressure differential of last mechanically-sealing apparatus 3, time mechanically-sealing apparatus 9 is lower; Sealing is reliable; Two groups of bearings can be in the sufficient lubrication state all the time, and power transmission shaft can not be worn, and can increase substantially the application life of power transmission shaft.
Claims (2)
1. but a closed spiro rod drilling tool power transmission shaft comprises power transmission shaft (1), upper bearing (metal) (4), housing (5), and housing (5) is sleeved on outside the power transmission shaft (1); Install bearing (4) between power transmission shaft (1) and the housing (5), it is characterized in that: have relief hole (2) on the housing (5), power transmission shaft (1) top cooperates with housing (5) upper gap; Relief hole (2) is under the matched in clearance; Install sealing device (3) on the upper bearing (metal) (4), upper sealing device (3) is under the relief hole (2), and pressurizer (6) is installed in the housing (5); Locate to have pressure compensation opening (7) at housing (5) corresponding pressure equalizer (6), between housing (5) bottom and the power transmission shaft (1) lower sealing device (9) is installed.
2. but closed spiro rod drilling tool power transmission shaft according to claim 1 is characterized in that: upper sealing device (3), lower sealing device (9) are mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100359918A CN102536112A (en) | 2012-02-09 | 2012-02-09 | Sealable screw drill transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100359918A CN102536112A (en) | 2012-02-09 | 2012-02-09 | Sealable screw drill transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102536112A true CN102536112A (en) | 2012-07-04 |
Family
ID=46343993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100359918A Pending CN102536112A (en) | 2012-02-09 | 2012-02-09 | Sealable screw drill transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102536112A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110709U (en) * | 1990-11-15 | 1992-07-22 | 大港石油管理局钻采工艺研究院 | Sealing device in transmission shaft of power drilling tool |
| CN2549153Y (en) * | 2002-04-22 | 2003-05-07 | 石油大学(北京) | Downhole power shaft with metal rubber thrust bearings and rolling bearings |
| CN101215954A (en) * | 2008-01-09 | 2008-07-09 | 西南石油大学 | High sealing property screw drill driving-shaft assembly |
| CN202500491U (en) * | 2012-02-09 | 2012-10-24 | 东营锐旭石油技术有限公司 | Closable screw drilling tool transmission shaft |
-
2012
- 2012-02-09 CN CN2012100359918A patent/CN102536112A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110709U (en) * | 1990-11-15 | 1992-07-22 | 大港石油管理局钻采工艺研究院 | Sealing device in transmission shaft of power drilling tool |
| CN2549153Y (en) * | 2002-04-22 | 2003-05-07 | 石油大学(北京) | Downhole power shaft with metal rubber thrust bearings and rolling bearings |
| CN101215954A (en) * | 2008-01-09 | 2008-07-09 | 西南石油大学 | High sealing property screw drill driving-shaft assembly |
| CN202500491U (en) * | 2012-02-09 | 2012-10-24 | 东营锐旭石油技术有限公司 | Closable screw drilling tool transmission shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202082265U (en) | Sealed oil lubrication drive shaft assembly | |
| CN104455000B (en) | A kind of graphite dry powder lubrication bearing and its processing technology | |
| CN202500491U (en) | Closable screw drilling tool transmission shaft | |
| CN104196441A (en) | Transmission shaft assembly of screw drill | |
| CN203784244U (en) | Top driving device sealing structure | |
| CN206611294U (en) | A kind of transmission mechanism is built in the external rotor brushless reducing motor of stator | |
| CN206889476U (en) | A kind of worm-gear type pivoting support of screw attachment | |
| CN105328798B (en) | Power-equipment, groove milling machine actuating device and slotter | |
| CN103615194B (en) | Helicoid hydraulic motor oil seal main shaft assembly | |
| CN202399133U (en) | Oil leakage preventing device for planetary grinding head | |
| CN202451049U (en) | Seal device of transmission shaft of PDM (positive displacement motor) drill | |
| CN102536112A (en) | Sealable screw drill transmission shaft | |
| CN204139962U (en) | A kind of screw drill transmission shaft assembly | |
| CN105546120A (en) | Bilateral-pressurizing multilevel automatic starting and stopping mechanical seal device | |
| CN206410150U (en) | Submerged slag conveyor external bearings Mechanical Sealed Type inner guide pulley device | |
| CN201588534U (en) | Sealing transmission shaft for screw drilling tool | |
| CN103398018A (en) | Slurry pump bearing lubrication system using both lubricating grease and thin oil | |
| CN205078608U (en) | Light anti - formula slewing bearing that adorns | |
| CN206419966U (en) | The sealed inner guide pulley device of submerged slag conveyor bearing built-in machines | |
| CN205868185U (en) | Action roller granulation machine compression roller axle head lubricating arrangement | |
| CN102401014A (en) | Bearing box | |
| CN208311465U (en) | A kind of grease pump mechanical sealing device | |
| CN207746892U (en) | A kind of mechanical main shaft of grinding machine | |
| CN201543480U (en) | Driving shaft of vertical impact crusher | |
| CN204299465U (en) | Oil seal helicoid hydraulic motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |