CN201071699Y - Combined dustproof structure of rotary blowout preventer end face - Google Patents
Combined dustproof structure of rotary blowout preventer end face Download PDFInfo
- Publication number
- CN201071699Y CN201071699Y CNU200720080662XU CN200720080662U CN201071699Y CN 201071699 Y CN201071699 Y CN 201071699Y CN U200720080662X U CNU200720080662X U CN U200720080662XU CN 200720080662 U CN200720080662 U CN 200720080662U CN 201071699 Y CN201071699 Y CN 201071699Y
- Authority
- CN
- China
- Prior art keywords
- rotary
- sealing
- blowout preventer
- dustproof
- dust ring
- 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
- 239000000428 dust Substances 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003209 petroleum derivative Substances 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 2
- 239000003345 natural gas Substances 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
A combined dustproof structure for the surface of rotary blowout preventer is used for preventing dust of upper dynamic sealing of rotary blowout preventer in petroleum drilling, and belongs to the technical field of the manufacturing of petroleum and natural gas drilling and exploitation equipment. The utility model is composed of a sealing groove, a dustproof ring and an elastic compensator. An upper dustproof ring is arranged in the sealing groove. A lower dustproof ring and elastic compensator are arranged in the sealing groove on the upper surface of a static part. Adopting the sealing in the end surface clearance between the upper and lower parts, the utility model designs a combined dustproof structure for the surface of rotary blowout preventer with vertical rotary axis, thus solving the problem that the dust is brought into the rotary center to damage the rotary sealing in the process of rotation in prior art. With the external surface dustproof, the utility model can prevent dust from entering the rotary center and prolong the using time of sealing parts.
Description
Technical field:
A kind of rotating blowout preventer end face combination dustproof construction is used for oil drilling and uses the dustproof of rotating blowout preventer top movable sealing, belongs to petroleum gas drilling and extracting equipment manufacturing technology field.
Background technology:
At present when implementing oil and gas well drilling, all to adopt a kind of drilling well medium to circulate, play by circulation and to prevent down-hole high pressure ejection ground, also as the medium that carries drilling cuttings from the down-hole earthward, but, greater than the drilling well medium of the reservoir pressure coefficient payzone under can be intrusively, and payzone polluted, influence later oil and gas production, simultaneously, also can influence the rate of penetration of drilling well,, improve the rate of penetration of drilling well in order to accelerate the exploration and development speed of petroleum gas, the stratum is not polluted again simultaneously, the at present main in the world technology of using is called under-balanced drilling technology, promptly adopts less than the drilling well medium of reservoir pressure coefficient as implementing circulation in the drilling process and carry the medium of down-hole drilling cuttings, still, because what adopt is drilling well medium less than reservoir pressure coefficient, adopt general preventer just can not satisfy the demand, can only use the rotating blowout preventer of under balance pressure drilling special use, to prevent drilling well medium and stratum output object ejection ground; Rotating blowout preventer is open-air open-air operation equipment, working condition is abominable, the rotary seal on its top is the seal failure because silt is invaded usually, the way that adopts is the konisphere of setting up defences on the circumference of the top of rotary seal at present, and problem is: facts have proved that the silt that is deposited in dust ring top is when rotation open flow device rotary work, because action of gravity, very fast downward intrusion dust ring and then damage rotary seal cause the seal failure of rotating blowout preventer assembly, and equipment can not be worked.
Summary of the invention:
The purpose of this utility model is will be at the defective of prior art, the mode of sealing is implemented in employing in the end clearance of top rotatable parts and lower stationary parts, designing a kind of pivot center that is applicable to is the rotating blowout preventer end face combination dustproof construction of vertical direction.
The utility model is to realize like this, the utility model is by sealed groove, dust ring and elastic compensating spare constitute, sealed groove is opened in respectively on the upper surface of the lower surface of top rotatable parts and lower stationary parts, be provided with the top dust ring in the sealed groove on the lower surface of top rotatable parts, be provided with bottom dust ring and elastic compensating spare in the sealed groove on the upper surface of lower stationary parts, after finishing installation, top dust ring malleation in the upper groove is on the dust ring of bottom, and the elastic compensating spare below the dust ring of bottom is suitably compressed, on, bottom dust ring end face forms contact and relatively rotates sealing; In the process of using, when upper and lower dust ring has wearing and tearing, under the effect of elasticity compensating part, the bottom dust ring will be pushed the upwards gap of compensate for wear, reach the effect of long term seal dustproof in lower channel.
The utility model has the advantages that: with the sealing and dustproof on a rotating body slewing circle cylinder of prior art, changed outside end face sealing and dustproof into, can avoid sand and dust to enter the inside of center of rotation, and be deposited in the top of dust ring, therefore can solve the sand and dust of piling up are brought into the rotary seal of center of rotation internal damage along with rotation problem in the process of rotation; Because end face dust seal of the present utility model externally realizes, be convenient to heat radiation, so can also solve prior art inside dust ring is set, in use with the problem of rotor frictional heating; Because the outside is subjected to size restrictions less, the compensation rate of elastic compensating spare can design greatlyyer, can further extend working time.
Description of drawings:
Fig. 1 is the position view that the utility model is installed on rotation open flow device.
Fig. 2 is the amplification scheme of installation of the utility model part.
The specific embodiment:
Provide embodiment of the present utility model below in conjunction with accompanying drawing, the utility model comprises sealed groove, dust ring and elastic compensating spare, sealed groove comprises top seal groove 7 and lower seal groove 8, top seal groove 7 is opened on the lower surface of top rotatable parts 1, lower seal groove 8 is opened on the upper surface of lower stationary parts 6, be provided with top dust ring 3 in the top seal groove 7, be provided with bottom dust ring 4 and elastic compensating spare 5 in the lower seal groove 8; During the assembling rotating blowout preventer, first in lower channel 8, pack into successively elastic compensating spare 5 and bottom dust ring 4, after packing into, the upper surface of bottom dust ring 4 can be higher than the upper surface of lower stationary parts 6, then top dust ring 3 is packed in the top seal groove 7, again top rotatable parts 1 are assembled into lower stationary parts 6, after packing into, dust ring 3 malleations in top are on bottom dust ring 4, and the elastic compensating spare 5 below the bottom dust ring 4 is compressed, the gap between top rotatable parts 1 and lower stationary parts 6 end faces 2 is formed relatively rotate sealing and dustproof; In the process of the use of rotating the open flow device, because dust ring is arranged in the gap 2 of top rotatable parts 1 and lower stationary parts 6 end faces, formed the dust seal of planar radial, when the sand and dust that caused by environment enter the gap 2 of top rotatable parts 1 lower surface and lower stationary parts 6 upper surfaces, be subjected to being arranged on stopping of upper and lower dust ring 3 and 4 outer garden directions, can not continue to invade the inner face of dust ring, in continuing use, sand and dust can continue accumulation, but, owing to be accumulation in the plane, can not invade dust ring downwards and then damage rotary seal because of action of gravity, cause the seal failure of rotating blowout preventer assembly; When upper and lower dust ring 3 and 4 end faces have wearing and tearing, the elastic compensating spare in lower channel 5 will promote the move upward gap of compensate for wear of bottom dust ring 4, reach the effect of long term seal dustproof.
Claims (1)
1. a rotating blowout preventer end face makes up dustproof construction, comprise sealed groove and sealing and dustproof ring, it is characterized in that: described sealed groove comprises top seal groove and lower seal groove, the top seal groove is opened on the lower surface of top rotatable parts, the lower seal groove is opened on the upper surface of lower stationary parts, be provided with the top dust ring in the top seal groove, be provided with bottom dust ring and elastic compensating spare in the lower seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080662XU CN201071699Y (en) | 2007-08-17 | 2007-08-17 | Combined dustproof structure of rotary blowout preventer end face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080662XU CN201071699Y (en) | 2007-08-17 | 2007-08-17 | Combined dustproof structure of rotary blowout preventer end face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071699Y true CN201071699Y (en) | 2008-06-11 |
Family
ID=39550257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720080662XU Expired - Lifetime CN201071699Y (en) | 2007-08-17 | 2007-08-17 | Combined dustproof structure of rotary blowout preventer end face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071699Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532741A (en) * | 2020-04-13 | 2021-10-22 | 南京理工大学 | Magnetic liquid dynamic seal part sand and dust test device |
-
2007
- 2007-08-17 CN CNU200720080662XU patent/CN201071699Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532741A (en) * | 2020-04-13 | 2021-10-22 | 南京理工大学 | Magnetic liquid dynamic seal part sand and dust test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081219 Address after: Two south section of Zhongshan Road, Sichuan, Guanghan Province, China: 618300 Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: The two section of South Zhongshan Road, Guanghan, Sichuan Province, China, 618300 Patentee before: Drilling and production technology Research Institute of Sichuan Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEERI Free format text: FORMER OWNER: SICHUAN PETROLEUM ADMINISTRATION DRILLING CRAFT TECHNOLOGY RESEARCH INSTITUTE Effective date: 20081219 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080611 |