CN2510674Y - Screw drilling tool drive shaft sealing device - Google Patents
Screw drilling tool drive shaft sealing device Download PDFInfo
- Publication number
- CN2510674Y CN2510674Y CN 01268291 CN01268291U CN2510674Y CN 2510674 Y CN2510674 Y CN 2510674Y CN 01268291 CN01268291 CN 01268291 CN 01268291 U CN01268291 U CN 01268291U CN 2510674 Y CN2510674 Y CN 2510674Y
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- CN
- China
- Prior art keywords
- transmission shaft
- sealing
- seal arrangement
- seal
- screw drill
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- 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
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- Sealing Devices (AREA)
Abstract
The utility model discloses a sealing device which is especially suitable for screw drilling tool drive shafts for oil exploitation and well repair operation. The sealing device is arranged outside a distance sleeve or outside a drive shaft, or arranged inside a drive shaft casing or inside a lower short joint, wherein the distance sleeve or the drive shaft is positioned at the upper end of an upper radial bearing, and the drive shaft casing or the lower short joint is positioned at the lower end of a lower radial bearing. A sealing body is provided with one or a plurality of outer sealing rings or one or a plurality of inner sealing rings. The sealing device can move along a shaft line relatively to the drive shaft, and the inner sealing rings is in a slip-ring combined sealing of rotary tooth form. The sealing device for screw drilling tool drive shafts is simple in structure, and has the characteristics of favorable sealing compensatory function, favorable sealing property, small friction, excellent abrasion resistant performance, high pressure resistance, high temperature resistance, etc. The sealing device can effectively prevent the drilling mud from entering a sealing chamber when screw drilling tools operates, prolong the service life of the screw drilling tool drive shaft devices, and meantime effectively prolong the operation time of the complete machine of screw drilling tools. The sealing device can also be applied to the shaft drive sealing of other liquid.
Description
(1) technical field
The utility model relates to a kind of seal arrangement, particularly relates to the seal arrangement of the screw drill transmission shaft that a kind of oil drilling or workover eration use.
(2) background technique
A kind of mud motor that helicoid hydraulic motor uses when being recover petroleum or workover eration, mainly comprise motor, cardan shaft, bypass valve and driveline, driveline wherein comprises transmission shaft, transmission shaft shell, radial bearing, thrust bearings, water cap, following pipe nipple.At present, bearing in the screw drill transmission shaft device mostly is open or adopts the conventional seals mode, thrust-bearing in the Open architecture (as shown in Figure 1) and radial bearing are all lubricated with drilling mud fluid, owing to contain solid formation in the drilling mud fluid, in lubricating bearings, also damaging bearing; And the conventional seals structure (as shown in Figure 2) that adopts, do not possess the sealing compensation function, and inner seal ring is a packing, frictional force is big, and sealing effect is undesirable, and drilling mud fluid is easy to enter in the Seal cage, existing screw drill transmission shaft device is short working life, generally have only 80～100 hours, the damage of driveline has had a strong impact on the work of helicoid hydraulic motor complete machine.
(3) summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, provide a kind of simple in structure, have sealing compensation function and good seal performance, frictional force is little, antiwear property good, high pressure resistant, resistant to elevated temperatures seal arrangement, be specially adapted to the screw drill transmission shaft device, can prevent effectively that drilling mud fluid from entering in the Seal cage, prolong screw drill transmission shaft device working life.
In order to achieve the above object, the seal arrangement of screw drill transmission shaft device of the present utility model is installed in spacer or transmission shaft outer and transmission shaft shell or time pipe nipple, lay respectively at the lower end of radial bearing upper end and lower radial bearing, 1 of exterior seal ring or several and 1 of inner seal ring or several are installed on seal body, seal arrangement can move along axis with respect to transmission shaft, and inner seal ring is rotation flute profile sliding ring type combination seal.
(4) description of drawings
Fig. 1 is known open screw drill transmission shaft device schematic representation.
Fig. 2 is the screw drill transmission shaft device schematic representation of known band conventional seals structure.
Fig. 3 is the utility model screw drill transmission shaft seal arrangement schematic representation.
Fig. 4 is the second example structure schematic representation of the utility model screw drill transmission shaft seal arrangement.
(5) specific embodiment
With reference to Fig. 1.Fig. 1 is known open screw drill transmission shaft apparatus structure schematic representation.1 is that transmission shaft shell, 2 is that last radial bearing, 3 is that thrust bearings, 4 is that lower radial bearing, 5 is that pipe nipple, 6 is a transmission shaft down among the figure.
With reference to Fig. 2.It is the screw drill transmission shaft device schematic representation of known band conventional seals structure.7 is sealed packing among the figure, and 8 is seal ring.
With reference to Fig. 3 and Fig. 4.Fig. 3 is a screw drill transmission shaft schematic diagram of sealing device of the present utility model, and Fig. 4 is the second example structure schematic representation of the utility model screw drill transmission shaft seal arrangement.11 and 18 is that seal arrangement, 12 is that transmission shaft shell, 13 is that spacer, 14 is that last radial bearing, 15 is that thrust bearings, 16 is that pipe nipple, 19 was that transmission shaft, 20 is that seal body, 21 is that exterior seal ring, 22 is that inner seal ring, 23 is that bearing, 24 is that pad, 25 is that back-up ring, 26 is that hole, 27 is a body under lower radial bearing, 17 was among the figure.Transmission shaft seal 11 is installed between spacer 13 and the transmission shaft shell 12, seal arrangement 18 is installed between transmission shaft 19 and transmission shaft shell 12 or the following pipe nipple 17, seal arrangement 11 and seal arrangement 18 lay respectively at the top of radial bearing 14 and the bottom of lower radial bearing 16, form Seal cage between seal arrangement 11 and the seal arrangement 18, can prevent effectively that drilling mud fluid from entering in the Seal cage, make radial bearing 14, lower radial bearing 16 and thrust bearings 15 not be subjected to the influence of drilling mud fluid.Seal body 20 outer surfaces are equipped with 1 or several exterior seal rings 21, and seal body 20 internal surfaces are equipped with 1 or several inner seal rings 22, and the quantity of exterior seal ring 21 and inner seal ring 22 is the best with 2 or 3.Seal arrangement 11 and seal arrangement 18 all can move along axis with respect to transmission shaft, can move because of the variation of working pressure, have compensate function.Inner seal ring 22 adopts rotation flute profile sliding ring type combination seals, has voluntarily to compensate, low frictional resistance, do not have and reveal and characteristics such as high pressure resistant, high temperature resistant.
Second embodiment of the utility model screw drill transmission shaft seal arrangement as shown in Figure 4, between seal arrangement 18 and transmission shaft 19 body 27 is installed, body 27 and transmission shaft 19 can reduce the difficulty of processing of transmission shaft for fixedlying connected, reduce the possibility that transmission shaft damages, be convenient to assembling.
Seal arrangement of the present utility model also can be used for the shaft drive sealing of other liquid.
Claims (11)
1. screw drill transmission shaft seal arrangement, comprise seal ring, it is characterized in that: seal arrangement (11,18) is installed in spacer (13) or transmission shaft (19) outer and transmission shaft shell (12) or time pipe nipple (17), lay respectively at the lower end of radial bearing (14) upper end and lower radial bearing (16), seal body (20) goes up (21) 1 of exterior seal rings of installation or more than one and (22) 1 of inner seal rings or more than.
2. screw drill transmission shaft seal arrangement according to claim 1 is characterized in that, described seal arrangement (11,18) can move along axis with respect to transmission shaft (19).
3. screw drill transmission shaft seal arrangement according to claim 2 is characterized in that, described inner seal ring (22) is rotation flute profile sliding ring type combination seal.
4. screw drill transmission shaft seal arrangement according to claim 3 is characterized in that, bearing (23) is installed in the seal body (20) in the described seal arrangement (11,18).
5. screw drill transmission shaft seal arrangement according to claim 4 is characterized in that, described bearing (23) is a rolling bearing.
6. screw drill transmission shaft seal arrangement according to claim 5 is characterized in that, described bearing (23) is a needle bearing.
7. screw drill transmission shaft seal arrangement according to claim 6 is characterized in that, described exterior seal ring (21) is 1 to 4, and inner seal ring (22) is 1 to 4.
8. screw drill transmission shaft seal arrangement according to claim 7 is characterized in that, described exterior seal ring (21) is 2 or 3, and inner seal ring (22) is 2 or 3.
9. according to any one described screw drill transmission shaft seal arrangement of claim 1 to 8, it is characterized in that between described seal arrangement (18) and the transmission shaft (19) body (27) being arranged.
10. screw drill transmission shaft seal arrangement according to claim 9 is characterized in that, described body (27) and transmission shaft (19) are for being fixedly connected.
11. screw drill transmission shaft seal arrangement according to claim 10 is characterized in that, described transmission shaft shell (12) goes up porose (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268291 CN2510674Y (en) | 2001-10-19 | 2001-10-19 | Screw drilling tool drive shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268291 CN2510674Y (en) | 2001-10-19 | 2001-10-19 | Screw drilling tool drive shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2510674Y true CN2510674Y (en) | 2002-09-11 |
Family
ID=33674502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268291 Expired - Lifetime CN2510674Y (en) | 2001-10-19 | 2001-10-19 | Screw drilling tool drive shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2510674Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882818A (en) * | 2010-07-14 | 2010-11-10 | 中国石油集团渤海石油装备制造有限公司 | Double-layer shell screw rod drilling tool motor stator |
| CN102268962A (en) * | 2011-08-09 | 2011-12-07 | 西南石油大学 | Oil seal screw drilling tool transmission shaft assembly with pressure compensation function |
| CN102296928A (en) * | 2011-09-06 | 2011-12-28 | 西南石油大学 | Transmission shaft assembly of oil sealing cavity pressure balancing spiral drilling rig |
| CN101440693B (en) * | 2008-12-15 | 2013-06-05 | 江苏长城石油装备制造有限公司 | High temperature deep well screw drilling tool |
| CN103851324A (en) * | 2012-12-03 | 2014-06-11 | 中国石油天然气集团公司 | Oil seal structure of underground power tool |
| 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 |
| CN104533281A (en) * | 2014-12-09 | 2015-04-22 | 沈阳工业大学 | Oil seal PDM (positive displacement motor) drill |
-
2001
- 2001-10-19 CN CN 01268291 patent/CN2510674Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440693B (en) * | 2008-12-15 | 2013-06-05 | 江苏长城石油装备制造有限公司 | High temperature deep well screw drilling tool |
| CN101882818A (en) * | 2010-07-14 | 2010-11-10 | 中国石油集团渤海石油装备制造有限公司 | Double-layer shell screw rod drilling tool motor stator |
| CN102268962A (en) * | 2011-08-09 | 2011-12-07 | 西南石油大学 | Oil seal screw drilling tool transmission shaft assembly with pressure compensation function |
| CN102296928A (en) * | 2011-09-06 | 2011-12-28 | 西南石油大学 | Transmission shaft assembly of oil sealing cavity pressure balancing spiral drilling rig |
| CN103851324A (en) * | 2012-12-03 | 2014-06-11 | 中国石油天然气集团公司 | Oil seal structure of underground power tool |
| CN103851324B (en) * | 2012-12-03 | 2016-08-03 | 中国石油天然气集团公司 | The oil seal structure of well dynamic instrument |
| 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 |
| CN104533281A (en) * | 2014-12-09 | 2015-04-22 | 沈阳工业大学 | Oil seal PDM (positive displacement motor) drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: DAGANG OILFIELD GROUP, ZHONGCHENG MACHINERY MANUFACTURING CO., LTD. Owner name: CNPC BOHAI PETROLEUM EQUIPMENT MANUFACTURING CO., Free format text: FORMER OWNER: DAGANG OIL FIELD GROUP CO., LTD. Effective date: 20100909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300280 YU HONGBIN TRANSFER, DAGANG DISTRICT, TIANJIN CITY TO: 300280 CHUANGANG ROAD, DAGANG OILFIELD, DAGANG DISTRICT, TIANJIN CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100909 Address after: 300280 Tianjin City, Grand Port Dagang Oilfield Sichuan Road Patentee after: CNPC Bohai Equipment Manufacturing Co., Ltd. Address before: 300280, Tianjin, Grand Port, Hong bin transfer Co-patentee before: Dagang Oilfield Group, Zhongcheng Machinery Manufacturing Co., Ltd. Patentee before: Dagang Oil Field Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111019 Granted publication date: 20020911 |