CN204284196U - Low friction resistance high abrasion list is to PDC composite sheet thrust bearing - Google Patents
Low friction resistance high abrasion list is to PDC composite sheet thrust bearing Download PDFInfo
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- CN204284196U CN204284196U CN201420702134.3U CN201420702134U CN204284196U CN 204284196 U CN204284196 U CN 204284196U CN 201420702134 U CN201420702134 U CN 201420702134U CN 204284196 U CN204284196 U CN 204284196U
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- composite sheet
- thrust bearing
- pdc composite
- shrinkage pool
- list
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Abstract
Low friction resistance high abrasion list is to PDC composite sheet thrust bearing.Belong to petroleum drilling engineering field.It solve the conventional thrust bearing problem that operating life is low under slurry environment.This thrust bearing comprises upper body, lower body, the center of upper body lower surface has lower shrinkage pool, the center of lower body upper surface has and the symmetrical upper concave hole of lower shrinkage pool, PDC composite sheet is all fixed with in lower shrinkage pool and upper concave hole, the polycrystalline diamond sheet of two PDC composite sheet outer ends all protrudes from the body at its place, and two polycrystalline diamond sheets fit.The utility model have mill resistance little, cost is low, the advantage of long service life.
Description
Technical field
The utility model belongs to petroleum drilling engineering field, is specifically related to a kind of thrust bearing.
Background technique
In mud motor, often can use thrust bearing, conventional thrust bearing need work in lubricating grease and oily territory, if work under slurry environment, often the life-span is short, cannot meet site operation requirement.If in mud motor, design can meet the sealing oil territory environment of conventional thrust bearing work, then complex structure, reliability is low, is difficult to realize.
Summary of the invention
The purpose of this utility model is to solve the conventional thrust bearing problem that operating life is low under slurry environment, and provides a kind of low friction resistance high abrasion list to PDC composite sheet thrust bearing.
This low friction resistance high abrasion list comprises upper body, lower body to PDC composite sheet thrust bearing, the center of upper body lower surface has lower shrinkage pool, the center of lower body upper surface has and the symmetrical upper concave hole of lower shrinkage pool, PDC composite sheet is all fixed with in lower shrinkage pool and upper concave hole, the polycrystalline diamond sheet of two PDC composite sheet outer ends all protrudes from the body at its place, and two polycrystalline diamond sheets fit.
The utility model has following beneficial effect:
This low friction resistance high abrasion list is symmetrically fixed with PDC composite sheet (full name: composite polycrystal-diamond (polycrystalline diamond compact to the upper body of PDC composite sheet thrust bearing and the center of lower body, PDC), adopt diadust and cemented carbide substrate to sinter under high pressure high temperature condition to form, both there is adamantine high hardness, high wear resistance and thermal conductivity, there is again intensity and the toughness of cemented carbide), due to two diamond chips its place body all slightly outstanding, therefore at upper body and lower body in central shaft rotation process, polycrystalline diamond sheet surface of contact only in two PDC composite sheet bears axial force and Relative friction.Because polycrystalline diamond sheet has the advantages such as hardness is high, mill resistance is low, wear resistance is strong, thus this low friction resistance high abrasion list can work to PDC composite sheet thrust bearing under open slurry environment, and have mill resistance little, cost is low, the advantage of long service life, effectively overcomes the conventional thrust bearing shortcoming that operating life is low under slurry environment.Through repeatedly ground experiment and field experiment, prove that this bearing can work under open slurry environment, can be widely used in needing in the downhole tool of thrust bearing, improve tool life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-upper body; 2-lower body; 3-PDC composite sheet; 4-polycrystalline diamond sheet.
Embodiment
Below in conjunction with Fig. 1, the utility model is described further:
This low friction resistance high abrasion list comprises upper body 1, lower body 2 to PDC composite sheet thrust bearing, the center of upper body 1 lower surface has lower shrinkage pool, the center of lower body 2 upper surface has and the symmetrical upper concave hole of lower shrinkage pool, all being fixed with PDC composite sheet 3, PDC composite sheet 3 in lower shrinkage pool and upper concave hole is fixed on body by soldering or bonding mode, the polycrystalline diamond sheet 4 of two PDC composite sheet 3 outer ends all protrudes from the body at its place, two polycrystalline diamond sheets 4 fit, due to two polycrystalline diamond sheets 4 its place body all slightly outstanding, therefore at upper body 1 and lower body 2 in central shaft rotation process, polycrystalline diamond sheet 4 surface of contact only in two PDC composite sheet 3 bears axial force and Relative friction, due to polycrystalline diamond sheet 4, to have hardness high, mill resistance is low, the advantages such as wear resistance is strong, thus this low friction resistance high abrasion list can work to PDC composite sheet thrust bearing under open slurry environment, and it is little to have mill resistance, cost is low, the advantage of long service life, effectively overcome the conventional thrust bearing shortcoming that operating life is low under slurry environment.This low friction resistance high abrasion list requires it is not very harsh to PDC composite sheet thrust bearing to upper body 1 and lower body 2, can carry out processing process on original part basis, meets upper and lower composite sheet assembling demand, thus can effectively cut down finished cost.Through repeatedly ground experiment and field experiment, prove that this bearing can work under open slurry environment, can be widely used in needing in the downhole tool of thrust bearing, improve tool life.
Claims (1)
1. low friction resistance high abrasion list is to PDC composite sheet thrust bearing, comprise upper body (1), lower body (2), it is characterized in that: the center of upper body (1) lower surface has lower shrinkage pool, the center of lower body (2) upper surface has and the symmetrical upper concave hole of lower shrinkage pool, PDC composite sheet (3) is all fixed with in lower shrinkage pool and upper concave hole, the polycrystalline diamond sheet (4) of two PDC composite sheet (3) outer ends all protrudes from the body at its place, and two polycrystalline diamond sheets (4) fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702134.3U CN204284196U (en) | 2014-11-20 | 2014-11-20 | Low friction resistance high abrasion list is to PDC composite sheet thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702134.3U CN204284196U (en) | 2014-11-20 | 2014-11-20 | Low friction resistance high abrasion list is to PDC composite sheet thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284196U true CN204284196U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420702134.3U Active CN204284196U (en) | 2014-11-20 | 2014-11-20 | Low friction resistance high abrasion list is to PDC composite sheet thrust bearing |
Country Status (1)
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| CN (1) | CN204284196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545567A (en) * | 2016-12-10 | 2017-03-29 | 北京春仑石油技术开发有限公司 | A kind of PDC thrust rings of slide thrust bearing |
-
2014
- 2014-11-20 CN CN201420702134.3U patent/CN204284196U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545567A (en) * | 2016-12-10 | 2017-03-29 | 北京春仑石油技术开发有限公司 | A kind of PDC thrust rings of slide thrust bearing |
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