CN208473736U - A kind of helicoid hydraulic motor can be reduced stator rubber extruding force - Google Patents
A kind of helicoid hydraulic motor can be reduced stator rubber extruding force Download PDFInfo
- Publication number
- CN208473736U CN208473736U CN201821110332.5U CN201821110332U CN208473736U CN 208473736 U CN208473736 U CN 208473736U CN 201821110332 U CN201821110332 U CN 201821110332U CN 208473736 U CN208473736 U CN 208473736U
- Authority
- CN
- China
- Prior art keywords
- limit sleeve
- universal shaft
- lost
- stator rubber
- hydraulic motor
- 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.)
- Active
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a kind of helicoid hydraulic motors that can be reduced stator rubber extruding force, belong to drilling equipment technical field, including shell, setting in the intracorporal motor assembly of shell and universal axle assembly；It is characterized by: the motor assembly includes stator rubber and screw rotor, the stator rubber is set on screw rotor；The universal axle assembly includes universal shaft top connection；The end of the universal shaft top connection is connected with the end of screw rotor；Universal shaft limit sleeve is arranged in the universal shaft top connection；It is abutted against at the outer wall at least one of the universal shaft limit sleeve with inner walls；At least one through hole is offered on the universal shaft limit sleeve.The beneficial effects of the utility model are: reducing the extruding force that stator rubber is subject to, the service life of stator rubber is improved, increase helicoid hydraulic motor uses the time；Capacity usage ratio is improved, guarantees that output is uniform and stable, significantly improves the working efficiency of helicoid hydraulic motor.
Description
Technical field
The utility model relates to drilling equipment technical fields, more particularly to a kind of spiral shell that can be reduced stator rubber extruding force
Bar drill tool.
Background technique
Helicoid hydraulic motor is common mud motor in the drilling engineerings such as petroleum, natural gas, shale gas, it includes bypass
Valve assembly, motor assembly, universal axle assembly and driving-shaft assembly four are most of, wherein motor assembly be provided for helicoid hydraulic motor it is dynamic
The core component of power is made of two essential parts of rotor and stator.Conventional motor stator is by stator case and stator rubber structure
At stator case inner cavity is smooth, cylindrical peripheral surface, and rubber is bonded in stator case inner wall, the inner hole of stator rubber by sulfuration process
For continuous helical curved surface.In the course of work, drilling fluid is by the seal chamber between screw rod rotor, so that rotor cycle is squeezed
Stator is pressed, generates power under rotor seal chamber differential pressure action.
In actual well drilled application process, discovery screw failure is mainly interrupted due to stator rubber by rotor centrifugal force
Property squeeze and fatigue phenomenon occurs, cause rubber to be permanently deformed, so as to cause stator rubber mechanical sealing performance decrease very
To local shedding, this seriously affects screw motor working efficiency and service life.It is overhauled simultaneously by the disassembly to helicoid hydraulic motor
It was found that screw stator rubber is by squeezing the permanent deformation occurred mainly in stator rubber lower part i.e. close to universal shaft one end, this is
Since screw rotor shows planet conical pendulm shape motion profile, extruding of the lower rotor to stator rubber during the work time
It is more serious, and this conical pendulm motion amplitude is increasing in the course of work, leads to helicoid hydraulic motor premature failure.Therefore
How research prevents screw rotor to be detached from the technology that planned course makees substantially conical pendulm movement has to service life of screw drilling tools is improved
Very big practical significance.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of stator rubber extruding force that can be reduced is provided
Helicoid hydraulic motor.
The purpose of this utility model is achieved through the following technical solutions: a kind of stator rubber extruding force of can be reduced
Helicoid hydraulic motor, including shell, setting are in the intracorporal motor assembly of shell and universal axle assembly；It is characterized by: the motor assembly
Including stator rubber and screw rotor, the stator rubber is set on screw rotor；The universal axle assembly includes universal shaft
Top connection；The end of the universal shaft top connection is connected with the end of screw rotor；Ten thousand are arranged in the universal shaft top connection
To axis limit sleeve；It is abutted against at the outer wall at least one of the universal shaft limit sleeve with inner walls；The universal shaft limit sleeve
On offer at least one through hole.
Preferably, screw rotor shell inner hole eccentric setting opposite with universal shaft top connection；The universal shaft limit
The axis collinear of the axis of set and screw rotor, universal shaft top connection.
Preferably, the universal shaft top connection is equipped with step；One end of universal shaft limit sleeve is resisted against screw rotor
End, the other end are resisted against on the step of universal shaft top connection.
Preferably, the inner and outer wall of the universal shaft limit sleeve is coated with wearing layer or is inlaid with wear-resistant block.
Preferably, the outer wall of the universal shaft limit sleeve is along the circumferential direction evenly arranged with multiple half slots；And universal shaft
Multiple circular hole runners are provided on limit sleeve；The half slot and circular hole runner along axially through.
Preferably, the universal shaft limit sleeve is cylindrical, and it is straight that the diameter of universal shaft limit sleeve is less than shell inner hole
Diameter；Universal shaft limit sleeve side offsets with inner walls.
Preferably, universal shaft limit sleeve side offsets with inner walls, and the other side has protrusion, and raised end face is
Cylindrical surface, and be adapted with inner walls.
It preferably, further include being arranged in the intracorporal anti-lost assembly of shell；The anti-lost assembly includes hollow anti-lost connecting rod and prevents
Fall limit sleeve；One end of the hollow anti-lost connecting rod be connected with it is hollow it is anti-cap off, the other end is connected with screw rotor；It is described anti-lost
Limit sleeve is set on hollow anti-lost connecting rod；It is abutted against at the outer wall at least one of the anti-lost limit sleeve with inner walls；Institute
It states and offers at least one through hole on anti-lost limit sleeve.
Preferably, the anti-lost limit sleeve is consistent with the structure of universal shaft limit sleeve.
Preferably, it is provided in the axial direction with central through hole in the hollow anti-lost connecting rod, is uniformly opened around hollow anti-lost connecting rod
Equipped with multiple transitional pores being connected to central through hole；Multiple transitional pores are between anti-lost limit sleeve and screw rotor.
The beneficial effects of the utility model are:
One, by increasing universal shaft limit sleeve in universal shaft top connection, limitation screw rotor is moved radially, and screw rod is avoided to turn
Son generates circular runout and excessive compression stator rubber, can reduce the extruding force that stator rubber is subject to, improve making for stator rubber
With the service life, increase helicoid hydraulic motor uses the time；
Two, screw rotor generates circular runout and will lead to transmitting uneven torque and energy loss, universal shaft limit simultaneously
Set can reduce the loss of screw rotor transmitting torque, improve capacity usage ratio, guarantee that output is uniform and stable, significantly improve screw drill
The working efficiency of tool；
Three, through hole guarantees that drilling fluid can be stayed smoothly from motor assembly into universal axle assembly, reduces hydraulic to drilling fluid
It influences；Convenient processing and manufacture, assembly is simple, is suitble to large-scale production, realizes bigger economic benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the preferred embodiment in the utility model.
Fig. 2 is the schematic perspective view of screw rotor Yu hollow anti-lost connecting rod.
Fig. 3 is I partial enlarged view in the utility model Fig. 1.
Fig. 4 is the Section A-A view (first embodiment) in the utility model Fig. 3.
Fig. 5 is the Section A-A view (second embodiment) in the utility model Fig. 3.
Fig. 6 is the Section A-A view (3rd embodiment) in the utility model Fig. 3.
Fig. 7 is the three-dimensional structure diagram (first embodiment) of universal shaft limit sleeve.
Fig. 8 is the three-dimensional structure diagram (second embodiment) of universal shaft limit sleeve.
Fig. 9 is the three-dimensional structure diagram (3rd embodiment) of universal shaft limit sleeve.
Figure 10 is II partial enlarged view in the utility model Fig. 1.
Figure 11 is the section B-B view (first embodiment) in the utility model Figure 10.
Figure 12 is the section B-B view (second embodiment) in the utility model Figure 10.
Figure 13 is the section B-B view (second embodiment) in the utility model Figure 10.
In figure: 1. shells；2. hollow prevent capping off；3. hollow anti-lost connecting rod；4. anti-lost limit sleeve；5. wear-resistant sleeve；6. locking
Ring；7. wear-resistant block；8. stator rubber；9. screw rotor；10. universal shaft top connection；11. universal shaft limit sleeve；12. transitional pore；
21. by-pass valve assembly；22. anti-lost assembly；23. motor assembly；24. universal axle assembly；25. driving-shaft assembly.
Specific embodiment
The utility model is further described with reference to the accompanying drawing, but the protection scope of the utility model is not limited to
It is as described below.
First embodiment:
As shown in figure 1 to figure 13, a kind of helicoid hydraulic motor can be reduced stator rubber extruding force, including shell 1, setting are in shell
Motor assembly 23 and universal axle assembly 24 in body 1；It is characterized by: the motor assembly 23 includes stator rubber 8 and screw rod
Rotor 9, the stator rubber 8 are set on screw rotor 9；The universal axle assembly 24 includes universal shaft top connection 10；It is described
The end of universal shaft top connection 10 is connected with the end of screw rotor 9, using threaded connection；It is covered in the universal shaft top connection 10
Equipped with universal shaft limit sleeve 11；It is abutted against at the outer wall at least one of the universal shaft limit sleeve 11 with 1 inner wall of shell；Described ten thousand
At least one through hole is offered on axis limit sleeve 11.
By increasing universal shaft limit sleeve 11 in universal shaft top connection 10, limitation screw rotor 9 is moved radially, and avoids screw rod
Rotor 9 generates circular runout and excessive compression stator rubber 8, can reduce the extruding force that stator rubber is subject to, and improves stator rubber 8
Service life, increase helicoid hydraulic motor use the time；Screw rotor 9, which generates circular runout, simultaneously will lead to transmitting torque unevenness
Uniform energy loss, universal shaft limit sleeve 11 can reduce the loss that screw rotor 9 transmits torque, improve capacity usage ratio, guarantee
It exports uniform and stable, significantly improves the working efficiency of helicoid hydraulic motor.Through hole is to guarantee that drilling fluid can be smoothly total from motor
Universal axle assembly 24 is flowed at 23.
Above-mentioned shell 1 includes anti-lost shell, stator case and universal shaft housing, anti-lost shell, stator case and universal
Connection is threadably secured between shaft housing, details are not described herein again.Helicoid hydraulic motor include from mountain and under sequentially connected by-passing valve
Assembly 21, anti-lost assembly 22, motor assembly 23, universal axle assembly 24 and driving-shaft assembly 25, such as Fig. 1, in order to clearly show it
Structure, helicoid hydraulic motor, which is divided into two parts, to be indicated；Anti-lost assembly 22 includes: anti-lost shell, hollow anti-caps off 2, hollow anti-lost company
Bar 3, anti-lost limit sleeve 4, wear-resistant sleeve 5 and locking ring 6；Locking ring 6 is fixedly connected with hollow anti-lost connecting rod 3, hollow anti-lost connecting rod 3
Central through hole there is step, anti-lost limit sleeve 4 is fastened between step and locking ring 6, is fixedly installed in the axial direction.It is anti-lost
It is equipped in shell and prevents capping off 2 matched steps with hollow.The motor assembly 23 includes: stator case, stator rubber 8 and screw rod
Rotor 9, hollow anti-lost connecting rod 3 passes through threaded upper end to be prevented capping off 2 connections with hollow, and lower end is connect with screw rotor 9, anti-lost limit
Set 4 is mounted at the step of hollow anti-lost connecting rod 3 by locking ring 6, is equipped with wear-resistant sleeve 5, drilling well inside anti-lost limit sleeve 4
Therefrom air defence falls the hole of connecting rod 3 and anti-lost limit sleeve 4 by entering motor assembly 23 to liquid；The universal shaft housing, universal shaft
Limit sleeve 11, wear-resistant sleeve 5 and universal shaft top connection 10 are a part of universal axle assembly 24.
The screw rotor 9 is arranged with universal shaft top connection 10 with respect to 1 inner eccentric holes of shell；The universal shaft limit sleeve 11
Axis and screw rotor 9, universal shaft top connection 10 axis collinear.
The universal shaft top connection 10 is equipped with step；One end of universal shaft limit sleeve 11 is resisted against the end of screw rotor 9
Portion, the other end are resisted against on the step of universal shaft top connection 10.Universal shaft limit sleeve 11 can both limit the radial position of screw rotor 9
It moves, the axial displacement of screw rotor 9 can also be limited.
The inner and outer wall of the universal shaft limit sleeve 11 is coated with wearing layer or is inlaid with wear-resistant block 7.Herein wear-resisting
It can be hard chrome material, ceramic material etc. that layer, which uses plating wear-resistant material, and wear-resistant block 7 uses cemented carbide material；In order to protect ten thousand
To axis top connection 10, wear-resistant sleeve 5 is provided between universal shaft top connection 10 and universal shaft limit sleeve 11, wear-resistant sleeve 5 uses copper；
It uses between wear-resistant sleeve 5 and universal shaft top connection 10 and is gap-matched between mating connection really up to the mark, with universal shaft limit sleeve 11
Connection.
It further include the anti-lost assembly 22 being arranged in shell 1；The anti-lost assembly 22 includes hollow anti-lost connecting rod 3 and anti-lost
Limit sleeve 4；One end of the hollow anti-lost connecting rod 3 be connected with it is hollow it is anti-cap off 2, the other end is connected with screw rotor 9；It is described anti-
Fall limit sleeve 4 to be set on hollow anti-lost connecting rod 3；It offsets at the outer wall at least one of the anti-lost limit sleeve 4 with 1 inner wall of shell
It connects；At least one through hole is offered on the anti-lost limit sleeve 4.The knot of the anti-lost limit sleeve 4 and universal shaft limit sleeve 11
Structure is consistent.
It is provided in the axial direction with central through hole in the hollow anti-lost connecting rod 3, is uniformly provided with around hollow anti-lost connecting rod 3 more
A transitional pore 12 being connected to central through hole；Multiple transitional pores 12 are between anti-lost limit sleeve 4 and screw rotor 9.It realizes and bores
Well liquid is fallen connecting rod from air defence while flowing through from anti-lost limit sleeve 4 and is passed through, and reduces anti-lost limit sleeve 4 to hydraulic influence.
Such as Fig. 4, Fig. 7, Figure 11, the outer wall of universal shaft limit sleeve 11 is along the circumferential direction evenly arranged with multiple half slots；And
Multiple circular hole runners are provided on universal shaft limit sleeve 11；The half slot and circular hole runner along axially through.Guarantee drilling well
Liquid smoothly can flow into universal axle assembly 24 from motor assembly 23, can be universal in guarantee using the structure of half slot and circular hole runner
Under the premise of 11 intensity of axis limit sleeve, reduce the obstruction to drilling fluid as far as possible, avoids reducing the hydraulic of drilling fluid.
Second embodiment:
Universal shaft limit sleeve 11 can also be adopted other than using the structure of half slot and circular hole runner in first embodiment
With such as under type, it can equally achieve the effect that limiting screw rotor 9 moves radially and guarantee smooth by drilling fluid.As Fig. 5,
Fig. 8, Figure 12, the universal shaft limit sleeve 11 is cylindrical, and the diameter of universal shaft limit sleeve 11 is less than 1 diameter of bore of shell；Ten thousand
It offsets to 11 side of axis limit sleeve and 1 inner wall of shell, remaining structure is consistent with first embodiment structure.
3rd embodiment:
In addition to this, it also can be used such as flowering structure, such as Fig. 6, Fig. 9, Figure 13, in 11 side of universal shaft limit sleeve and shell 1
Wall offsets, and the other side has protrusion, and raised end face is cylindrical surface, and is adapted with 1 inner wall of shell, and protrusion is resisted against shell 1
Inner wall；Remaining structure is consistent with first embodiment structure.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, there can be various modifications and variations in the spirit and principles of the utility model, these are equivalent
Variation or replacement etc., are included in the protection scope of the present invention.
Claims (10)
1. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force, including shell, setting are in the intracorporal motor assembly of shell and ten thousand
To axle assembly；It is characterized by: the motor assembly includes stator rubber and screw rotor, the stator rubber is set in screw rod
On rotor；The universal axle assembly includes universal shaft top connection；The end of the universal shaft top connection and the end of screw rotor
It is connected；Universal shaft limit sleeve is arranged in the universal shaft top connection；At the outer wall at least one of the universal shaft limit sleeve with
Inner walls abut against；At least one through hole is offered on the universal shaft limit sleeve.
2. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 1, it is characterised in that: the spiral shell
Bar rotor and universal shaft top connection are relative to shell inner hole eccentric setting；The axis and screw rotor of the universal shaft limit sleeve,
The axis collinear of universal shaft top connection.
3. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 1, it is characterised in that: described ten thousand
Step is equipped with to axis top connection；One end of universal shaft limit sleeve is resisted against the end of screw rotor, and the other end is resisted against universal
On the step of axis top connection.
4. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 1, it is characterised in that: described ten thousand
Wearing layer is coated with to the inner and outer wall of axis limit sleeve or is inlaid with wear-resistant block.
5. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 1, it is characterised in that: described ten thousand
Multiple half slots are along the circumferential direction evenly arranged with to the outer wall of axis limit sleeve；And multiple circular holes are provided on universal shaft limit sleeve
Runner；The half slot and circular hole runner along axially through.
6. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 1, it is characterised in that: described ten thousand
Cylindrical to axis limit sleeve, the diameter of universal shaft limit sleeve is less than shell inner hole diameter；Universal shaft limit sleeve side and shell
Inner wall offsets.
7. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 6, it is characterised in that: described ten thousand
Offset to axis limit sleeve side with inner walls, the other side has protrusion, and raised end face is cylindrical surface, and with inner walls phase
Adaptation.
8. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force, feature described in any one according to claim 1~7
It is: further includes being arranged in the intracorporal anti-lost assembly of shell；The anti-lost assembly includes hollow anti-lost connecting rod and anti-lost limit sleeve；Institute
State hollow anti-lost connecting rod one end be connected with it is hollow it is anti-cap off, the other end is connected with screw rotor；The anti-lost limit sleeve is arranged
On hollow anti-lost connecting rod；It is abutted against at the outer wall at least one of the anti-lost limit sleeve with inner walls；The anti-lost limit
It puts on and offers at least one through hole.
9. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 8, it is characterised in that: described anti-
It is consistent with the structure of universal shaft limit sleeve to fall limit sleeve.
10. a kind of helicoid hydraulic motor that can be reduced stator rubber extruding force according to claim 8, it is characterised in that: described
It is provided in the axial direction with central through hole in hollow anti-lost connecting rod, multiple and central through hole is uniformly provided with around hollow anti-lost connecting rod and is connected
Logical transitional pore；Multiple transitional pores are between anti-lost limit sleeve and screw rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821110332.5U CN208473736U (en) | 2018-07-13 | 2018-07-13 | A kind of helicoid hydraulic motor can be reduced stator rubber extruding force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821110332.5U CN208473736U (en) | 2018-07-13 | 2018-07-13 | A kind of helicoid hydraulic motor can be reduced stator rubber extruding force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208473736U true CN208473736U (en) | 2019-02-05 |
Family
ID=65210718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821110332.5U Active CN208473736U (en) | 2018-07-13 | 2018-07-13 | A kind of helicoid hydraulic motor can be reduced stator rubber extruding force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208473736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267823A (en) * | 2020-11-24 | 2021-01-26 | 中国石油天然气集团有限公司 | Anti-tripping motor assembly of screw drill |
| CN112459729A (en) * | 2021-01-25 | 2021-03-09 | 东营政阳自动化科技有限公司 | Oil field screw drilling tool with heat dissipation function |
-
2018
- 2018-07-13 CN CN201821110332.5U patent/CN208473736U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267823A (en) * | 2020-11-24 | 2021-01-26 | 中国石油天然气集团有限公司 | Anti-tripping motor assembly of screw drill |
| CN112459729A (en) * | 2021-01-25 | 2021-03-09 | 东营政阳自动化科技有限公司 | Oil field screw drilling tool with heat dissipation function |
| CN112459729B (en) * | 2021-01-25 | 2021-06-11 | 胜利油田东方实业投资集团有限责任公司 | Oil field screw drilling tool with heat dissipation function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103422814B (en) | Oil drilling three-dimensional waterpower vibrator | |
| WO2016150113A1 (en) | Positive displacement motor drill and rock breaking well drilling method therefor | |
| WO2019061617A1 (en) | Negative pressure pulse oscillator | |
| CN208473736U (en) | A kind of helicoid hydraulic motor can be reduced stator rubber extruding force | |
| CN108131100B (en) | Hydraulic oscillator | |
| CN208534402U (en) | A kind of hydroscillator | |
| CN108442883B (en) | Underground hydraulic oscillator | |
| CN204152424U (en) | A kind of down-hole helicoid hydraulic motor | |
| CN207583317U (en) | Eddy current type oscillating jet pressure pulse friction reducer | |
| CN108798520A (en) | A kind of underground drop, which is rubbed, subtracts the shimmy drilling tool of torsion | |
| CN203022654U (en) | Sealing type universal shaft for screw drilling tool | |
| CN110374494B (en) | Screw drilling tool | |
| CN213743223U (en) | Anti-tripping motor assembly of screw drill | |
| CN107165574B (en) | A kind of block stamp formula impact helicoid hydraulic motor | |
| CN203097709U (en) | Screw drill drive shaft assembly | |
| CN204827218U (en) | Cavity screw rod drilling tool | |
| CN109162645B (en) | Pulse pressurizing generator | |
| CN110056309A (en) | System of Rotating about Fixed Axis positive displacement power tool | |
| CN104695853B (en) | A kind of screw drilling tool motor and the helicoid hydraulic motor with the motor | |
| CN108716362A (en) | A kind of fluid power carrying helicoid hydraulic motor | |
| CN211314172U (en) | Hollow pumping aid | |
| CN110748296B (en) | Mechanical pointing type rotary steering drilling tool | |
| CN209483234U (en) | Drill string abrasionproof drag reduction adapter | |
| CN209277814U (en) | Double acting couples coiled tubing resistance absorber | |
| CN202991456U (en) | Novel inclined shaft thick oil pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Screw drill capable of reducing stator rubber extrusion force Effective date of registration: 20220507 Granted publication date: 20190205 Pledgee: Bank of China Limited Chengdu pilot Free Trade Zone Branch Pledgor: SICHUAN HUADE SHENYUAN PETROLEUM MACHINERY Co.,Ltd. Registration number: Y2022510000119 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |