CN2551753Y - Oil Storage compensation simple sealed drive shaft with multiple rows of thrust ball bearing - Google Patents
Oil Storage compensation simple sealed drive shaft with multiple rows of thrust ball bearing Download PDFInfo
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- CN2551753Y CN2551753Y CN 02240121 CN02240121U CN2551753Y CN 2551753 Y CN2551753 Y CN 2551753Y CN 02240121 CN02240121 CN 02240121 CN 02240121 U CN02240121 U CN 02240121U CN 2551753 Y CN2551753 Y CN 2551753Y
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- thrust ball
- ball bearing
- multiple row
- oil storage
- storage compensation
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Abstract
The utility model relates to an oil-reserve compensation simple sealing driving shaft with a multirow thrust ball bearing, which comprises a shaft, an upper and a lower radial hard alloy sliding bearings, and an outer casing, the upper and the lower radial hard alloy sliding bearings are arranged on the shaft successively, the outer casing is arranged outside the bearings. An upper rubber sealing, a multirow thrust ball bearing, and a lower rubber sealing are successively arranged between the upper and the lower radial hard alloy sliding bearings, the room enclosed by the upper and the lower rubber sealings, the shaft, and the outer casing is an operating oil cavity, the multirow thrust ball bearing is arranged in the operating oil cavity. The utility model can cause all parts in the operating oil cavity of a borehole power drill to be well lubricated as working, when the lube leaks in a small amount, an oil-reserve compensator is able to supplement the lube in time by the action of the drilling operating liquid pressure, the high pressure generated in the sealing oil cavity is prevented, the oil leakage is avoided, the service life of the bearings is prolonged, the operation is reliable, and the change of throwaway units is convenient.
Description
Technical field:
The utility model relates to field mud motor power transmission shafts such as a kind of oil, mine, coalfield, gas field, and the simple and easy sealing power transmission shaft of the oil storage compensation with multiple row thrust ball bearing that especially a kind of application life is long belongs to machinery manufacturing technology field.
Background technology:
Because the restriction of service condition, the mud motor (as helicoid hydraulic motor, turbodrill etc.) in fields such as oil, mine, coalfield, gas field all is forced to make tubulose, and diameter is limited.Designing intensity, performance, working life in limited space, can both to satisfy the power drilling tool difficulty that people require very big.The key that improves mud motor complete machine performance is to improve the working life of mud motor power transmission shaft, and domestic and international countless scientific workers are devoted for years to the research in this respect, have obtained some achievements, but also very not satisfactory.Adopt open architecture as present turbodrill and screw drill transmission shaft, utilize drilling well working solution (mud) cooling and lubricating rolling bearing, even select best material and Technology for Heating Processing for use, have only 50～100 hours the average length of working life of its consumable accessory thrust bearing, and the time marquis consumable accessory working life that the drilling well working solution purifies is the longest also to be no more than 150 hours.
The utility model content:
The purpose of this utility model is to provide a kind of simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing at the deficiency of prior art, and it had than the long life, and safe in utilization.
The purpose of this utility model is achieved by the following technical solution:
A kind of simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing, it is by axle, top is carbide sliding bearing radially, the bottom is carbide sliding bearing and shell body composition radially, wherein, on, bottom radially carbide sliding bearing is provided with on axle in turn, bearing is provided with shell body outward, radially be provided with the top rubber seal between the carbide sliding bearing in turn in the upper and lower, multiple row thrust ball bearing and bottom rubber seal, the top rubber seal, the bottom rubber seal, axle is a working oil chamber with the space that shell body is enclosed, and the multiple row thrust ball bearing is located in the working oil chamber.
Radially be provided with the oil storage compensation device between the carbide sliding bearing in the upper and lower part, it is positioned at the working oil chamber top.
The oil storage compensation device mainly comprises compensated loop, expansion loop matrix, one-way relief valves, expansion loop inner core, expansion loop urceolus, piston and sealing ring; Compensated loop is close to a side, and formed accommodation space is a shoe cream room between expansion loop matrix, expansion loop inner core, expansion loop urceolus and the piston, and expansion loop matrix and expansion loop inner core or urceolus upper end are provided with one-way relief valves.
Rubber seal is made up of sealing rotating ring, stationary ring and rubber seal respectively, rubber seal is respectively dynamic seal ring and static seal circle, wherein, dynamic seal ring is located between sealing rotating ring and the stationary ring, and the static seal circle is located at respectively between sealing rotating ring and the axle and between stationary seal ring and the shell body.
The multiple row thrust ball bearing is arranged in the working oil chamber, and columns is more than two row.
The multiple row thrust ball bearing is 4 angular contact ball bearings of multiple row bidirectional propulsion or multiple row series connection thrust ball bearing.
Multiple row thrust ball bearing axial play momentum is 0.1mm～5.0mm.
Radially be provided with anti-lost mechanism between the axle above the carbide sliding bearing, below the rubber seal of bottom and the shell body body in the bottom, the diameter of the evagination shoulder that encircles in the anti-lost mechanism is greater than anti-lost mechanism outer shroud endoporus minimum diameter and/or the bottom quiet circle internal diameter of carbide sliding bearing radially.
Radially be respectively arranged with a drilling fluid through hole on the axle of position between the carbide sliding bearing on the axle of position between oil storage compensation device and the top rubber seal and in anti-lost mechanism and bottom.
Be respectively arranged with oil filler point and outage at shell body body two ends.
In sum, the utlity model has following advantage:
1, utilizes the higher characteristics of mud motor working environment pressure, mud motor consumable accessory thrust ball bearing is sealed in the working oil chamber H, all working part in the seal oil chamber is worked under the oil bath state all the time, and when the lubrication oil in the working oil chamber has a small amount of leakage, oil storage compensation device 1 can in time replenish the lubrication oil of some from shoe cream room M to working oil chamber H under drilling well work action of hydraulic force, to prolong the working life of mud motor consumable accessory thrust ball bearing.
2, in addition, the utility model radially is provided with anti-lost mechanism 17 between the axle above the carbide sliding bearing 15, below the bottom rubber seal 3 and the shell body body in the bottom, the diameter of the evagination shoulder of ring 17a is greater than the anti-lost outer shroud 17b of mechanism endoporus minimum diameter and/or the bottom quiet circle of carbide sliding bearing 15b internal diameter radially in the anti-lost mechanism, in the time of can preventing in the bottom cross section, junction of carbide sliding bearing moving-coil 15a radially and axle 4 and other dangerouse cross-section generation fatigue failure fracture, axle and drill bit or other instrument on it fall well.
Description of drawings:
Fig. 1 adopts the transmission shaft structure schematic diagram of 4 angular contact ball bearings of multiple row bidirectional propulsion (four circles) for the utility model;
Fig. 2 adopts the transmission shaft structure schematic diagram of 4 angular contact ball bearings of multiple row bidirectional propulsion (two circles) for the utility model;
Fig. 3 is the utility model oil storage compensation device structural representation;
Fig. 4 is (Fig. 3 A-A is to view) overvoltage one-way relief valves structural representation;
Fig. 5 is a radially rubber sealing structure schematic diagram of the utility model upper and lower;
Fig. 6 is 4 angular contact ball bearings of the utility model multiple row bidirectional propulsion (four circles) structural representations;
Fig. 7 is 4 angular contact ball bearings of the utility model multiple row bidirectional propulsion (two circles) structural representations;
Fig. 8 is the utility model one row series connection thrust ball bearing structural representation.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model specific embodiment is done detailed description further.
Embodiment 1:
As shown in Figure 1, adopt the transmission shaft structure schematic diagram of 4 angular contact ball bearings of multiple row bidirectional propulsion (four circles) for the utility model; Radially radially carbide sliding bearing 15, shoe cream room M, working oil chamber H and shell body body 7 etc. are formed carbide sliding bearing 5, oil storage compensation device 1, top rubber seal 2, multiple row thrust ball bearing 6, bottom rubber seal 3, anti-lost mechanism 17, bottom by the top that is provided with in regular turn on axle 4, the axle 4 for it.
Wherein, top radially in carbide sliding bearing moving-coil 5a, compensated loop 13, top rubber seal rotating ring 2a, bottom rubber seal rotating ring 3a, the anti-lost mechanism ring 17a, bottom radially carbide sliding bearing moving-coil 15a etc. be contained in successively on the axle 4, by be close to top radially the clamp nut of carbide sliding bearing moving-coil 5a be pressed on the axle 4, constitute the rotating part of power transmission shaft; The top radially quiet circle of carbide sliding bearing 5b, oil storage compensation device 1, top rubber seal stationary ring 2b, bottom rubber seal stationary ring 3b, the anti-lost outer shroud 17b of mechanism etc. is contained in the shell body body 7 successively, by the bottom radially the quiet circle of carbide sliding bearing 15b be pressed in the shell body body 7, constitute the stationary part of power transmission shaft.
As shown in Figure 5, be upper and lower part rubber sealing structure schematic diagram.As we know from the figure, top rubber seal 2 by sealing rotating ring 2a, stationary ring 2b and on sealing ring 16 constitute, wherein sealing ring 16a, 16e and 16f are static seal, and sealing ring 16b, 16c and 16d are rotary dynamic seal.Bottom rubber seal 3 by sealing rotating ring 3a, stationary ring 3b and on sealing ring 18 constitute, wherein sealing ring 18a, 18e and 18f are static seal, and sealing ring 18b, 18c and 18d are rotary dynamic seal.Sealing rotating ring 2a and 3a external surface are all handled through case hardening, and it has higher hardness and excellent abrasive resistance.Multiple-sealed owing to having, therefore drilling fluid also can't enter in the seal oil chamber under elevated pressures.
As shown in Fig. 1, Fig. 3 and Fig. 4, oil storage compensation device 1 is positioned at working oil chamber H top, and it mainly comprises parts such as expansion loop matrix 14, one-way relief valves 8, expansion loop inner core 12, expansion loop urceolus 11, piston 10 and sealing ring 9.Oil storage compensation device matrix 14 is provided with lubrication oil through hole F and G, and the upper end of expansion loop inner core 12 or urceolus 11 and resilient sleeve cartridge type one-way relief valves 8 contact positions are provided with a vertical fluting B.Shoe cream room M is linked to each other by ring-type grease channel C with working oil chamber H.Between oil storage compensation device 1 and compensated loop 13 ring-type drilling well working solution passage D.One-way relief valves 8 can be opened automatically when causing the oil pocket internal pressure too high when generation gas in working oil chamber H and the shoe cream room M or because of other reason, allows gas or too much lubrication oil to overflow, and does not allow the drilling well working solution to enter in the seal oil chamber from annular space.Arrow is represented drilling well working solution flow direction among Fig. 1.As shown in Figure 1, the axle of position is provided with a drilling fluid through hole N between oil storage compensation device and the top rubber seal, anti-lost mechanism and bottom radially between the carbide sliding bearing position spool be provided with a drilling fluid through hole Q.When mud motor have during in underground work a small amount of drilling fluid from top radially the gap between carbide sliding bearing rotating ring 5a and the stationary ring 5b enter axle 4 endoporus by annular channel D and through hole N, meanwhile the pressure of drilling fluid is delivered among the working oil chamber H by piston 10, shoe cream room M and annular channel C, lubrication oil among the shoe cream room M enters working oil chamber H from annular channel C, moves to shoe cream room M position topmost up to piston 10.
When mud motor during in underground work because bit pressuredrop is bigger, a small amount of drilling fluid in axle 4 endoporus can be under pressure enters annular space between drill string and the well from through hole Q along direction shown in the arrow among Fig. 1 from the gap between bottom carbide sliding bearing rotating ring 15a and the stationary ring 15b.
As shown in Figure 1, be respectively arranged with an oil filler point L and outage P, inject lubrication oil to shoe cream room M, working oil chamber H and ring-type grease channel C with convenient at shell body body 7 two ends.
For prevent axle from the W-W cross section and near the fracture of dangerouse cross-section or other dangerouse cross-section cause drill bit or other instrument to fall all the other component of well inter-axle shaft not fall well, the utility model has designed anti-lost 17a of mechanism and 17b, its structure as shown in Figure 1.The diameter of the evagination shoulder of ring 17a is all bigger than the anti-lost outer shroud 17b of mechanism endoporus minimum diameter and/or the quiet circle of power transmission shaft bottom carbide sliding bearing 15b internal diameter in the anti-lost mechanism of power transmission shaft, when axle and down behind the work certain hour W-W cross section and near when dangerouse cross-section or other dangerouse cross-section generation fatigue failure fracture, axle might fall well with drill bit or other instrument on it.The utility model can stop axle and last other instrument of axle not to fall well after above-mentioned anti-lost mechanism has been arranged, in order to avoid cause bigger loss.
The life-span that the key of raising mud motor power transmission shaft working life is how to improve the power transmission shaft consumable accessory.The main consumable accessory of mud motor power transmission shaft is a thrust bearing.Existing transmission shaft structure is born the consumable accessory roll angle contact thrust ball bearing of axial load, under drilling fluid (mud) cooling and lubricating condition, work, high rigidity solid phase particles (as quartz sand) in the drilling fluid becomes the abrasive particle medium, cause thrust bearing to descend quick-wearing in drilling fluid abrasive wear condition, the working life of thrust bearing does not reach the level of people's expectation, generally has only 50～100 hours.The utility model is sealed in the multiple row thrust ball bearing in the oil pocket, the working life of thrust ball bearing in seal oil chamber looks many than the working life under drilling fluid cooling and lubricating condition, and the working life that has the simple and easy sealing power transmission shaft of oil storage compensation of multiple row thrust ball bearing so just can be satisfied the demand.
The radial clearance of the radially carbide sliding bearing of multiple row thrust ball bearing above and below is 0.1mm～0.8mm, top radially carbide sliding bearing rubbing surface length is 50～200mm, bottom radially carbide sliding bearing rubbing surface length is 100～300mm, so just can guarantee that the thrust ball bearing in the power transmission shaft only bears axial load, and only allow the drilling fluid that contains less solid phase particles in right amount enter in the bearing bore, carbide sliding bearing radially is lubricated and cools off, do not influence the jeting effect of drill bit again.Radially carbide sliding bearing moving-coil outer round surface and quiet circle internal circular surfaces are inlaid with wearable hard alloy, the hardness height of carbide alloy, abrasion resistance is good, can be under the bad working environments condition works fine, the life-span is longer.
Involved " oil storage compensation device " utilized utility model patent " mud motor oil storage sealing compensation structure " (patent designer: Tan Chunfei in the utility model, the patent No.: ZL00234224.3) part technology, different places be that all movable sealings and static seal all are radially rubber seals in the utility model, and rotary dynamic seal is end face seal in the patent " mud motor oil storage sealing compensation structure ", and all the other movable sealings and static seal are radially rubber seal.
Embodiment 2:
As shown in Figure 2, for the utility model adopts the transmission shaft structure schematic diagram of 4 angular contact ball bearings of multiple row bidirectional propulsion (two enclose), its bearing arrangement is different with embodiment 1, and the concrete structure schematic diagram is referring to Fig. 6 and Fig. 7.The other technologies feature is all identical with embodiment 1, does not repeat them here.
Embodiment 3:
As shown in Figure 8, be the utility model one row series connection thrust ball bearing structural representation, connect thrust ball bearing combination of multiple row is put into working oil chamber and just become the power transmission shaft that the utility model adopts multiple row series connection thrust ball bearing, and its bearing arrangement is all different with the above embodiments 1 and embodiment 2.The other technologies feature is all identical with the foregoing description, does not repeat them here.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (10)
1, a kind of simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing, it is by axle, top is carbide sliding bearing radially, the bottom is carbide sliding bearing and shell body composition radially, wherein, on, bottom radially carbide sliding bearing is provided with on axle in turn, bearing is provided with shell body outward, it is characterized in that: radially be provided with the top rubber seal between the carbide sliding bearing in turn in the upper and lower, multiple row thrust ball bearing and bottom rubber seal, the top rubber seal, the bottom rubber seal, axle is a working oil chamber with the space that the shell body body is enclosed, and the multiple row thrust ball bearing is located in the working oil chamber.
2, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 1 is characterized in that: radially be provided with the oil storage compensation device between the carbide sliding bearing in the upper and lower part, it is positioned at the working oil chamber top.
3, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 2, it is characterized in that: described oil storage compensation device mainly comprises compensated loop, expansion loop matrix, one-way relief valves, expansion loop inner core, expansion loop urceolus, piston and sealing ring; Compensated loop is close to a side, and formed accommodation space is a shoe cream room between expansion loop matrix, expansion loop inner core, expansion loop urceolus and the piston, and expansion loop matrix and expansion loop inner core or urceolus upper end are provided with one-way relief valves.
4, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 1, it is characterized in that: described rubber seal is made up of sealing rotating ring, stationary ring and rubber seal respectively, rubber seal is respectively dynamic seal ring and static seal circle, wherein, dynamic seal ring is located between sealing rotating ring and the stationary ring, and the static seal circle is located at respectively between sealing rotating ring and the axle and between stationary seal ring and the shell body.
5, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 1, it is characterized in that: described multiple row thrust ball bearing is arranged in the working oil chamber, and columns is more than two row.
6, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 5 is characterized in that: described multiple row thrust ball bearing is 4 angular contact ball bearings of multiple row bidirectional propulsion or multiple row series connection thrust ball bearing.
7, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 5, it is characterized in that: described multiple row thrust ball bearing axial play momentum is 0.1mm～5.0mm.
8, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 1, it is characterized in that: radially be provided with anti-lost mechanism between the axle above the carbide sliding bearing, below the rubber seal of bottom and the shell body in the bottom, the diameter of the evagination shoulder that encircles anti-lost mechanism in is greater than anti-lost mechanism outer shroud endoporus minimum diameter and/or the bottom quiet circle internal diameter of carbide sliding bearing radially.
9, according to claim 1 or 2 or 3 or the 4 or 8 described simple and easy sealing power transmission shafts of oil storage compensation, it is characterized in that: radially be respectively arranged with a drilling fluid through hole on the axle of position between the carbide sliding bearing on the axle of position between oil storage compensation device and the top rubber seal and in anti-lost mechanism and bottom with multiple row thrust ball bearing.
10, the simple and easy sealing power transmission shaft of oil storage compensation with multiple row thrust ball bearing according to claim 1 is characterized in that: be respectively arranged with oil filler point and outage at the shell body two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240121 CN2551753Y (en) | 2002-07-10 | 2002-07-10 | Oil Storage compensation simple sealed drive shaft with multiple rows of thrust ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240121 CN2551753Y (en) | 2002-07-10 | 2002-07-10 | Oil Storage compensation simple sealed drive shaft with multiple rows of thrust ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2551753Y true CN2551753Y (en) | 2003-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240121 Expired - Fee Related CN2551753Y (en) | 2002-07-10 | 2002-07-10 | Oil Storage compensation simple sealed drive shaft with multiple rows of thrust ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2551753Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112879422A (en) * | 2021-02-04 | 2021-06-01 | 中国地质科学院勘探技术研究所 | Novel combined thrust bearing group for downhole motor |
-
2002
- 2002-07-10 CN CN 02240121 patent/CN2551753Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112879422A (en) * | 2021-02-04 | 2021-06-01 | 中国地质科学院勘探技术研究所 | Novel combined thrust bearing group for downhole motor |
| CN112879422B (en) * | 2021-02-04 | 2022-07-01 | 中国地质科学院勘探技术研究所 | Novel combined thrust bearing group for downhole motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |