CN201794785U - Thrust brake for underground electrical submersible pump - Google Patents
Thrust brake for underground electrical submersible pump Download PDFInfo
- Publication number
- CN201794785U CN201794785U CN201020505634XU CN201020505634U CN201794785U CN 201794785 U CN201794785 U CN 201794785U CN 201020505634X U CN201020505634X U CN 201020505634XU CN 201020505634 U CN201020505634 U CN 201020505634U CN 201794785 U CN201794785 U CN 201794785U
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- bearing
- thrust
- hollow spindle
- thrust bearings
- rings
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Abstract
The utility model discloses a thrust brake for an underground electrical submersible pump, which comprises a middle shell, upper and lower connectors, a hollow spindle and an axial impeller. The main body of the thrust bearing pack of the thrust brake consists of bearing static rings, bearing dynamic rings and steel balls, wherein the bearing static rings and the bearing dynamic rings are arranged up and down at intervals; and the steel balls are arranged between the bearing static rings and the bearing dynamic rings; the steel balls contact the steel ball rollaways in the bearing static rings and the bearing dynamic rings at zero angle; external supporting sleeves are arranged between bearing static rings and on the outer sides of the bearing static rings at two ends of the thrust bearing pack; the bearing static rings and the external supporting sleeves are jointed with the middle shell; bearing dynamic rings and internal supporting sleeves are jointed with the hollow spindle; and the hollow spindle is provided with a fastening mechanism for fixing the thrust bearing pack. The utility model has the prominent advantages of simple structure and high thrusting capacity.
Description
Technical field
The utility model belongs to axial thrust mechanism, particularly relates to the thrust device that a kind of down-hole electric submersible screw pump is used.
Background technique
The agent structure of down-hole electric submersible screw pump thrust device comprises the hollow spindle of the bearings of the last lower contact at middle casing and two ends thereof and last lower contact.The main shaft of corresponding middle casing is provided with thrust bearings, and thrust bearings is external in middle casing, and upper connection press-fits the upper end in thrust bearings, and the lower end of thrust bearings is supported in lower contact through supporting sleeve, and main shaft also is set with axial-flow blower.
Because the down-hole electric submersible screw pump exists and instead pushes away that axial force is big, the practical problem of thrust-bearing premature failure, therefore seldom uses in petroleum recovering equipment.
The model utility of notification number CN201170182 " a kind of tandem thrust force protection device " is a kind of technological scheme that proposes at the problems referred to above, this scheme is that the periphery at main shaft is provided with the series connection axle sleeve, and described series connection axle sleeve comprises that two or two sub-axle sleeves are in series; Described series connection axle sleeve is fixedlyed connected with described housing.In addition, the periphery of described axle is provided with inducer, and inducer is connected with described axle by spline thinks that described axle provides circulating oil path to ensure the lubricated and cooling of described series connection bearing.
Above-mentioned model utility is to attempt by the plural serial stage axle sleeve of axle periphery axial force to be transmitted on housing and the adpting flange step by step, offsetting axial force, and provide the ouput force that does not have axial force fully by the spline housing of an end of axle, but its effect is unknown.
Summary of the invention
The utility model be for solve that the down-hole electric submersible screw pump exists instead push away that axial force is big, the technical problem of thrust-bearing premature failure and propose the thrust device that a kind of down-hole electric submersible screw pump is used.
The utility model is taked following technological scheme for achieving the above object: this thrust device comprises middle casing, last lower contact, hollow spindle and axial-flow blower, feature is, the main body of thrust bearings is by alternately bearing Jing Quan and bearing moving-coil up and down, and the steel ball between bearing Jing Quan and the bearing moving-coil constitutes, described steel ball and bearing are quiet, the wrapping angle of the steel ball raceway of moving-coil is a zero angle, between the quiet circle of described bearing and be positioned at the quiet circle of the bearing at the thrust bearings two ends outside and be equipped with outer support set, bearing Jing Quan and outer support set engage with middle casing, between the outer support set at thrust bearings two ends and last lower contact, be respectively equipped with supporting sleeve, be provided with interior support set between the described bearing moving-coil, bearing moving-coil and interior support set engage with hollow spindle, and hollow spindle is provided with the fixedly tightening mechanism of thrust bearings.
The utility model can also be taked following technical measures:
Described lower contact is supported with the taper type magnetic receiver of the nonferromagnetic material of annular space heart main shaft setting, and magnetic receiver is fixed with strong magnet ring, constitutes lubricant oil precipitation chamber between strong magnet ring and the axial-flow blower, and the gap of magnetic receiver and hollow spindle is 2-4mm.
Described thrust bearings upper end portion and the pairing hollow spindle of magnetic receiver root are provided with the radially lubrication oil circulation duct that is communicated with the hollow cavity of hollow spindle.
The hollow spindle surface distributed of described thrust bearings upper and lower end parts correspondence has axial lubrication oil circulation groove.
Outer support set of each of described thrust bearings and supporting sleeve are respectively equipped with radially lubrication oil circulation duct.
The beneficial effects of the utility model and advantage are: the thrust bearings of this thrust device is that steel ball and bearing are quiet, the wrapping angle of the steel ball raceway of moving-coil is the pure axial thrust bearing of zero angle, gathering way of axial internal clearance can be dropped to minimumly, can obviously prolong the uptime that electric submersible screw pump is once gone into the well.The thrust bearings of this thrust device is a multi-layer combined type, the load of can more effective adaptation big axially thrust and big torque.The oil cleaning system that this thrust device is made of magnetic receiver, strong magnet ring and lubricant oil precipitation chamber can be with the metal impurities adsorption precipitation in the lubricant oil, the obvious lubricated environment that improved that is provided with in the oil of cleaning and each lubrication oil circulation groove, duct, reduced the wearing and tearing of thrust bearings, also helped prolonging the uptime that electric submersible screw pump is once gone into the well.The utlity model has outstanding advantage simple in structure, that thrust capacity is strong.
Description of drawings
Accompanying drawing 1 is the utility model example structure generalized section.
Accompanying drawing 2 is Figure 1A portion zoomed-in views.
Mark among the figure: 1. hollow spindle; 1-1. lubrication oil circulation duct; 1-2. lubrication oil circulation groove; 2. upper connection; 3. middle casing; 3-1. housing lubrication oil circulation groove; 4. thrust bearings: 4-1. step bearing moving-coil; 4-2. steel ball; 4-3. bearing Jing Quan; 4-4. bearing moving-coil; 4-5. interior support set; 4-6. outer support set; 4-6-1. outer support set lubrication oil circulation duct; 5. axial-flow blower; 6. magnetic receiver; 7. strong magnet ring; 8. lower contact; 9. supporting sleeve; 9-1. supporting sleeve lubrication oil circulation duct; 10. lubricant oil precipitates the chamber.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof.
Embodiment as shown in Figure 1, 2, this thrust device comprises middle casing 3, upper connection 2, lower contact 8, hollow spindle 1 and axial-flow blower 5.The hollow spindle 1 of this thrust device is provided with thrust bearings 4, the main body of thrust bearings 4 is by alternately bearing quiet circle 4-3 and bearing moving-coil 4-4 up and down, and the steel ball 4-2 formation between bearing quiet circle 4-3 and the bearing moving-coil 4-4, steel ball 4-2 and bearing are quiet, the wrapping angle of the steel ball raceway of moving-coil is that zero angle constitutes pure axial thrust bearing.
Between the quiet circle of the bearing 4-3 and the quiet circle of the step bearing 4-3 outside that is positioned at the thrust bearings two ends is equipped with outer support set 4-6, and the quiet circle of bearing 4-3 and outer support set 4-6 engage with middle casing.Between the outer support set at thrust bearings two ends and upper connection 2, lower contact 8, be respectively equipped with supporting sleeve 9.
Support set 4-5 in being provided with between the bearing moving-coil 4-4, bearing moving-coil 4-4 and interior support set 4-5 engage with hollow spindle 1.Hollow spindle 1 is provided with the tightening mechanism that is same as prior art of the fixedly thrust bearings that lays respectively at the thrust bearings upper and lower end.
Embodiment as shown in Figure 1, 2, the pairing hollow spindle 1 of thrust bearings 4 upper end portions and magnetic receiver 6 roots is provided with the lubrication oil circulation duct 1-1 radially that is communicated with the hollow cavity of hollow spindle; Hollow spindle 1 surface distributed of thrust bearings 4 upper and lower end parts correspondences has axial lubrication oil circulation groove 1-2; Outer support set 4-6 of each of thrust bearings and supporting sleeve 9 are respectively equipped with outer support set lubrication oil circulation duct 4-6-1 and supporting sleeve lubrication oil circulation duct 9-1 radially.Embodiment's magnetic receiver 6, strong magnet ring 7, lubricant oil precipitation chamber 10 and each lubrication oil circulation duct, groove have constituted oil cleaning system.
Claims (5)
1. thrust device that the down-hole electric submersible screw pump is used, comprise middle casing, last lower contact, hollow spindle and axial-flow blower, it is characterized in that: the main body of thrust bearings is by alternately bearing Jing Quan and bearing moving-coil up and down, and the steel ball between bearing Jing Quan and the bearing moving-coil constitutes, described steel ball and bearing are quiet, the wrapping angle of the steel ball raceway of moving-coil is a zero angle, between the quiet circle of described bearing and be positioned at the quiet circle of the bearing at the thrust bearings two ends outside and be equipped with outer support set, bearing Jing Quan and outer support set engage with middle casing, between the outer support set at thrust bearings two ends and last lower contact, be respectively equipped with supporting sleeve, be provided with interior support set between the described bearing moving-coil, bearing moving-coil and interior support set engage with hollow spindle, and hollow spindle is provided with the fixedly tightening mechanism of thrust bearings.
2. thrust device according to claim 1, it is characterized in that: described lower contact is supported with the magnetic receiver of the nonferromagnetic material of annular space heart main shaft setting, magnetic receiver is fixed with strong magnet ring, constitute lubricant oil precipitation chamber between strong magnet ring and the axial-flow blower, the gap of magnetic receiver and hollow spindle is 2-4mm.
3. thrust device according to claim 1 is characterized in that: described thrust bearings upper end portion and the pairing hollow spindle of magnetic receiver root are provided with the radially lubrication oil circulation duct that is communicated with the hollow cavity of hollow spindle.
4. thrust device according to claim 1 is characterized in that: the hollow spindle surface distributed of described thrust bearings upper and lower end parts correspondence has axial lubrication oil circulation groove.
5. thrust device according to claim 1 is characterized in that: outer support set of each of described thrust bearings and supporting sleeve are respectively equipped with radially lubrication oil circulation duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020505634XU CN201794785U (en) | 2010-08-26 | 2010-08-26 | Thrust brake for underground electrical submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020505634XU CN201794785U (en) | 2010-08-26 | 2010-08-26 | Thrust brake for underground electrical submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794785U true CN201794785U (en) | 2011-04-13 |
Family
ID=43849694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020505634XU Expired - Lifetime CN201794785U (en) | 2010-08-26 | 2010-08-26 | Thrust brake for underground electrical submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410738A (en) * | 2013-09-02 | 2013-11-27 | 徐树林 | Axial flow screw pump |
| CN109296344A (en) * | 2018-11-26 | 2019-02-01 | 山东泽元石油机械有限公司 | Submersible screw pump retarder protector |
-
2010
- 2010-08-26 CN CN201020505634XU patent/CN201794785U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410738A (en) * | 2013-09-02 | 2013-11-27 | 徐树林 | Axial flow screw pump |
| CN109296344A (en) * | 2018-11-26 | 2019-02-01 | 山东泽元石油机械有限公司 | Submersible screw pump retarder protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
|
| CX01 | Expiry of patent term |