CN202500491U - Closable screw drilling tool transmission shaft - Google Patents
Closable screw drilling tool transmission shaft Download PDFInfo
- Publication number
- CN202500491U CN202500491U CN2012200514938U CN201220051493U CN202500491U CN 202500491 U CN202500491 U CN 202500491U CN 2012200514938 U CN2012200514938 U CN 2012200514938U CN 201220051493 U CN201220051493 U CN 201220051493U CN 202500491 U CN202500491 U CN 202500491U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- housing
- power transmission
- sealing device
- disposed
- 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
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Abstract
The utility model relates to a closable screw drilling tool transmission shaft comprising a transmission shaft, an upper bearing, and a housing. The housing is sleeved on an outer side of the transmission shaft, and the upper bearing is disposed between the transmission shaft and the housing. The housing is provided with a pressure release hole. An upper part of the transmission shaft and an upper part of the housing are in a clearance fit, and the pressure release hole is disposed under the clearance fit. The upper bearing is provided with an upper sealing device, which is disposed under the pressure release hole. A pressure balancer is disposed in the housing, and a position of the housing corresponding to the pressure balancer is provided with a pressure balance hole. A lower sealing device is disposed between the lower part of the housing and the transmission shaft. A closed cavity is disposed between the transmission shaft and the housing, and is filled with lubricating oil. Two groups of bearings are not contacted with slurry containing grinding substances, and can be lubricated adequately, therefore the transmission shaft can not be worn, and the service lifetime of the transmission shaft can be greatly improved. The multi-time trip caused by changing the transmission shaft of the screw drilling tool is not required, and the construction period of drilling and repairing wells can be short.
Description
Technical field
The utility model 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 purpose of the utility model is a kind of closed spiro rod drilling tool power transmission shaft of design, overcomes the deficiency of prior art, significantly prolongs its application life, increases economic efficiency.
The purpose of the utility model is achieved in that and comprises power transmission shaft, upper bearing (metal), housing that 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 beneficial effect of the utility model is: 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 the assembling drawing of the utility model.
The specific embodiment
Below in conjunction with Fig. 1 the embodiment of the utility model is described.
The embodiment of the utility model is as shown in the figure, comprises 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.
During the utility model work, 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 |
|---|---|---|---|
| CN2012200514938U CN202500491U (en) | 2012-02-09 | 2012-02-09 | Closable screw drilling tool transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200514938U CN202500491U (en) | 2012-02-09 | 2012-02-09 | Closable screw drilling tool transmission shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500491U true CN202500491U (en) | 2012-10-24 |
Family
ID=47037106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200514938U Expired - Fee Related CN202500491U (en) | 2012-02-09 | 2012-02-09 | Closable screw drilling tool transmission shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500491U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536112A (en) * | 2012-02-09 | 2012-07-04 | 东营锐旭石油技术有限公司 | Sealable screw drill transmission shaft |
| CN104196440A (en) * | 2014-07-11 | 2014-12-10 | 江汉石油钻头股份有限公司 | Sealing-type screw drill transmission shaft assembly |
| CN106567672A (en) * | 2016-11-08 | 2017-04-19 | 中国石油天然气集团公司 | Self-lubricating transmission device |
-
2012
- 2012-02-09 CN CN2012200514938U patent/CN202500491U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536112A (en) * | 2012-02-09 | 2012-07-04 | 东营锐旭石油技术有限公司 | Sealable screw drill transmission shaft |
| CN104196440A (en) * | 2014-07-11 | 2014-12-10 | 江汉石油钻头股份有限公司 | Sealing-type screw drill transmission shaft assembly |
| CN106567672A (en) * | 2016-11-08 | 2017-04-19 | 中国石油天然气集团公司 | Self-lubricating transmission device |
| CN106567672B (en) * | 2016-11-08 | 2018-08-10 | 中国石油天然气集团公司 | self-lubricating transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121024 Termination date: 20160209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |