CN203856421U - Seal cartridge of cardan shaft of screw drill - Google Patents
Seal cartridge of cardan shaft of screw drill Download PDFInfo
- Publication number
- CN203856421U CN203856421U CN201420289843.3U CN201420289843U CN203856421U CN 203856421 U CN203856421 U CN 203856421U CN 201420289843 U CN201420289843 U CN 201420289843U CN 203856421 U CN203856421 U CN 203856421U
- Authority
- CN
- China
- Prior art keywords
- sealing shroud
- seal cartridge
- drilling rod
- articulated joint
- screw drilling
- 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.)
- Expired - Lifetime
Links
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 46
- 238000005553 drilling Methods 0.000 claims description 18
- 230000007704 transition Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 abstract 2
- 229920001971 elastomer Polymers 0.000 abstract 2
- 230000000737 periodic effect Effects 0.000 abstract 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 210000000867 larynx Anatomy 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a seal cartridge of a cardan shaft of a screw drill. The seal cartridge comprises a small-diameter column sleeve end and a large-diameter locking end which is connected with the small-diameter column sleeve through a taper sleeve. The seal cartridge is characterized in that the radial section of the taper sleeve is corrugated. The seal cartridge has the advantages that the structure is simple and reasonable, and manufacturing and installing are convenient; the seal cartridge is made of flexing-resistant butadiene-acrylonitrile rubber or hydrogenated butadiene-acrylonitrile rubber which is good in flexing resistance and adaptive to periodic deflection movement of the seal cartridge along with the cardan shaft, time for flexing failure, caused by the periodic deflection movement, of the seal cartridge is prolonged, and the service life is long; a corrugated arch-shaped structure is adopted for the taper sleeve, the stress change amplitude is small when the seal cartridge moves along with the cardan shaft, and because the seal cartridge is uniform in wall thickness and low in heat gathering effect, the seal cartridge is longer in service life.
Description
Technical field
The utility model relates to the articulated joint for screw drilling rod sealing shroud in a kind of oil, geological drilling field.
Background technology
Helicoid hydraulic motor is generally connected in sequence by by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly.Universal drive shaft assembly is made up of two universal joints and a jackshaft, its role is to convert the planetary motion of motor rotor to fixed-axis rotation, and rotating speed and moment of torsion are passed to power transmission shaft.
Universal drive shaft divides two kinds of sealed and non-tight formulas.The universal joint movable part of non-tight formula is immersed in drilling fluid (mud), owing to containing abrasive particles in mud, so, non-tight formula universal drive shaft running serious wear, application life is low; Sealed universal drive shaft separates universal joint and mud, and universal joint is with lubricator lubricated, and therefore, application life is longer.
Articulated joint for screw drilling rod has multiple hermetically-sealed construction, and patent ZL200920021427.4 screw drill sealing-ball-column hinge universal shaft relates to cone cartridge type, single arch and fluted body universal drive shaft sealing shroud; The sealing of a patent ZL200910063784 sealed universal shaft adopts the sealing of O type circle pattern; ZL201220016092.9 ball pivot articulated joint for screw drilling rod relates to a kind of complicated hermetically-sealed construction, and obturating cup is supported by seal washer and is fixed in lower contact by pressure cap by sealing clamp.
In the above multiple universal drive shaft hermetically-sealed construction, can be divided into sealing shroud and two kinds of forms of non-tight cover, non-tight cover form structure complexity, in fact seldom application, and now the main sealing shroud using is single arch sealing shroud, the problem such as exist local stress bigger than normally, not resistance to subdue, application life is low.
Summary of the invention
Technical problem to be solved in the utility model is environment and the loading characteristic while working for helicoid hydraulic motor, provides a kind of and resistance toly subdues, the articulated joint for screw drilling rod sealing shroud of long service life.
The utility model for addressing the above problem proposed technical scheme is: comprise path column sleeve end and large footpath locking end, path column sleeve end is connected by tapered sleeve with large footpath locking end, it is characterized in that described tapered sleeve radial section is ripple type.
Press such scheme, described path column sleeve end is provided with path flange, and described large footpath locking end is provided with large footpath flange.
Press such scheme, described ripple type is ripple arch.
Press such scheme, described ripple is sinusoidal waveform.
Press such scheme, described ripple arch is two arches, and arch upward circular arc and 2 the radius of curvature less transition arcs larger by 2 radius of curvature form.
Press such scheme, described ripple arch is three arches, and arch upward circular arc and 3 the radius of curvature less transition arcs larger by 3 radius of curvature form.
Press such scheme, described sealing shroud is subdued acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber is made by resistance to.
Press such scheme, the monolateral angle of taper of described tapered sleeve is 12 ° ~ 18 °.
Press such scheme, described tapered sleeve wall thickness is 2 ~ 4mm.
When the utility model uses, universal drive shaft sealing shroud is set between universal joint and jackshaft, swivel nut locking sealing for one end, and larynx hoop locking sealing for the other end, or two ends all lock sealing by larynx hoop mode, to avoid sealing shroud that relative torsion occurs in assembling process; In addition, in sealing shroud, to be full of sliding agent, to prevent that sealing shroud inside and outside differential pressure from causing sealing shroud to be attached to universal drive shaft surface, cause sealing shroud wearing and tearing to break, but sliding agent filling be too much, causes sealing shroud gross distortion, also will affect the application life of sealing shroud.
The beneficial effects of the utility model are: 1, simple and reasonable, fabrication and installation are convenient; 2, sealing shroud is subdued acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber is made by resistance to, and resistance to subdue shape good, can adapt to the periodicity beat motion of sealing shroud with universal drive shaft, extends motion thus and cause sealing shroud to subdue the time of inefficacy, long service life; 3, tapered sleeve adopts ripple domes, and sealing shroud STRESS VARIATION amplitude in the time moving along with universal drive shaft is less, and sealing shroud wall thickness is even, and hot polymerization effect is little, thereby longer service life.
Brief description of the drawings
Fig. 1 is the structure chart of facing of an embodiment of the utility model.
Fig. 2 is the structure chart of facing of another embodiment of the utility model.
Fig. 3 is use state diagram of the present utility model.
Detailed description of the invention
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing.
Fig. 1 is an embodiment of the present utility model, for a kind of two arch ripple structions, comprise path column sleeve end 13 and path flange 10, the other end is large footpath locking end 14 and large footpath flange 12, path column sleeve end is connected by tapered sleeve 11 with large footpath locking end, described tapered sleeve radial section is ripple arch, formed by 2 the larger circular arc R 2 that arches upward, R4 and 2 less transition arc R1, R3 of radius of curvature of radius of curvature, the monolateral angle of taper of tapered sleeve is 15 °, the arc radius that arches upward is 15 ~ 18mm, transition arc radius 5 ~ 10mm, wall thickness 2.5 ~ 4mm.Sealing shroud is subdued acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber is made by resistance to, and needs to ensure enough hardness, with the abrasive grains scratching of avoiding sealing shroud to be mingled with in drilling fluid.
Fig. 2 is another embodiment of the present utility model, for a kind of three arch ripple structions, wherein in tapered sleeve 11, R2, R4, R6 are 3 circular arcs that arch upward that radius of curvature is larger, and R1, R3, R5 are 3 transition arcs that radius of curvature is less, and other structure is similar to two arch sealing shrouds.
Adopt the articulated joint for screw drilling rod of the utility model sealing shroud, by internal spline joint 1, ball seat 2, fulcrum ball 3, jackshaft 4, sealing shroud 5, locknut 6, anti-lost ring 7, greasing hole 8 and larynx hoop 9 form, wherein internal spline joint 1 engages with the external splines of jackshaft 4, sealing shroud 5 one end are connected with internal spline joint 1 by screw thread with locknut 6, and the other end is connected with jackshaft 4 with larynx hoop 9.Inject lubricating grease from greasing hole 8 to sealing shroud and in the cavity of universal joint.Sealing shroud two ends also can be fixed with larynx hoop, and sealing cover can be in the universal drive shaft of other helicoid hydraulic motors such as ball-and-socket hinge style universal drive shaft, ball drum-type universal drive shaft.
Claims (9)
1. an articulated joint for screw drilling rod sealing shroud, comprises path column sleeve end and large footpath locking end, and path column sleeve end is connected by tapered sleeve with large footpath locking end, it is characterized in that described tapered sleeve radial section is ripple type.
2. by articulated joint for screw drilling rod sealing shroud claimed in claim 1, it is characterized in that described path column sleeve end is provided with path flange, described large footpath locking end is provided with large footpath flange.
3. by the articulated joint for screw drilling rod sealing shroud described in claim 1 or 2, it is characterized in that described ripple type is ripple arch.
4. by the articulated joint for screw drilling rod sealing shroud described in claim 1 or 2, it is characterized in that described ripple is sinusoidal waveform.
5. by articulated joint for screw drilling rod sealing shroud claimed in claim 3, it is characterized in that described ripple arch is for two arches, arch upward circular arc and 2 the radius of curvature less transition arcs larger by 2 radius of curvature form.
6. by articulated joint for screw drilling rod sealing shroud claimed in claim 3, it is characterized in that described ripple arch is three arches, arch upward circular arc and 3 the radius of curvature less transition arcs larger by 3 radius of curvature form.
7. by the articulated joint for screw drilling rod sealing shroud described in claim 1 or 2, it is characterized in that described sealing shroud subdues acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber is made by resistance to.
8. by the articulated joint for screw drilling rod sealing shroud described in claim 1 or 2, it is characterized in that the monolateral angle of taper of described tapered sleeve is 12 ° ~ 18 °.
9. by the articulated joint for screw drilling rod sealing shroud described in claim 1 or 2, it is characterized in that described tapered sleeve wall thickness is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289843.3U CN203856421U (en) | 2014-06-03 | 2014-06-03 | Seal cartridge of cardan shaft of screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289843.3U CN203856421U (en) | 2014-06-03 | 2014-06-03 | Seal cartridge of cardan shaft of screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856421U true CN203856421U (en) | 2014-10-01 |
Family
ID=51606283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420289843.3U Expired - Lifetime CN203856421U (en) | 2014-06-03 | 2014-06-03 | Seal cartridge of cardan shaft of screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989291A (en) * | 2015-07-23 | 2015-10-21 | 德州联合石油机械有限公司 | Spline cardan shaft type screw drill |
| CN112983254A (en) * | 2021-03-30 | 2021-06-18 | 长江大学 | Screw drill for directional drilling and well repairing |
-
2014
- 2014-06-03 CN CN201420289843.3U patent/CN203856421U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989291A (en) * | 2015-07-23 | 2015-10-21 | 德州联合石油机械有限公司 | Spline cardan shaft type screw drill |
| CN104989291B (en) * | 2015-07-23 | 2017-12-22 | 德州联合石油机械有限公司 | The universal shaft type helicoid hydraulic motor of spline |
| CN112983254A (en) * | 2021-03-30 | 2021-06-18 | 长江大学 | Screw drill for directional drilling and well repairing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: KINGDREAM PLC |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180307 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Patentee after: KINGDREAM PLC Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |