CN2806754Y - Mechanical sealer for polished rod of oil pumping unit - Google Patents
Mechanical sealer for polished rod of oil pumping unit Download PDFInfo
- Publication number
- CN2806754Y CN2806754Y CN 200520078850 CN200520078850U CN2806754Y CN 2806754 Y CN2806754 Y CN 2806754Y CN 200520078850 CN200520078850 CN 200520078850 CN 200520078850 U CN200520078850 U CN 200520078850U CN 2806754 Y CN2806754 Y CN 2806754Y
- Authority
- CN
- China
- Prior art keywords
- oil
- polished rod
- pumping
- oil pumping
- box
- 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 - Fee Related
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 235000014121 butter Nutrition 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 47
- 238000012856 packing Methods 0.000 abstract description 8
- 238000005498 polishing Methods 0.000 abstract description 6
- 239000010779 crude oil Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
At present, in oil field development, a polished rod mechanical pumping unit is basically adopted for pumping oil, but the sealing is a technical problem which is difficult to solve because the polished rod and the packing box of the pumping unit are difficult to achieve concentricity in movement and are sealed by a single rubber ring, so that structural oil leakage generally exists. The utility model discloses a but the concentricity of automatically regulated oil pumping polished rod and well head packing box avoids the sealing member eccentric wear, need not the beam-pumping unit polished rod mechanical seal ware of shut down emptying crude oil during the change sealing member. The technical scheme is that an oil pipe joint flange is arranged at the lower part of an oil pumping polished rod, a spherical lower gland and a spherical locking box are arranged at the upper part of the oil pumping polished rod, and a bearing baffle, an axial rolling bearing, a polishing sleeve, a spring and a sealing ring are sequentially arranged in the oil pumping polished rod, so that the oil pumping polished rod can bear 5-20 MPa of oil pressure without leakage, the effective working time is improved by 3-5 times, the oil pumping polished rod is convenient to disassemble and install, the environment is protected, the oil pumping polished rod can be widely popularized and used.
Description
Technical field
The utility model belongs to petroleum machinery, relates to a kind of oil well head oil pumper, specifically is a kind of oil-extractor polish-rod mechanical seal device.
Background technology
At present; in oil field development, extract oil; basically be to adopt polished rod machinery oil pumper; and the well head sealing of polished rod machinery oil pumper is the technical problem that is difficult to solution; its core is the concentricity that will guarantee oil-extractor polish-rod and well head packing box; the present wellhead sealing device that generally adopts; its oil-extractor polish-rod is by rotating the eccentric throw that eccentric position is regulated oil-extractor polish-rod and oil pipe with the concentric of packing box; but owing to be subjected to the restriction of polished rod machinery oil pumper design defect; in fact be difficult to be adjusted to one heart; so inevitably exist the deflection between oil-extractor polish-rod and packing box and the oil pipe; and all adopt single seal with elastometic washer; therefore the structural leakage of oil of ubiquity, because eccentric physical presence makes the seal eccentric wear serious, effectively the sealing time is short in addition; when changing seal, also need shut down emptying crude oil; not only the time long, also cause crude oil to waste in a large number, and contaminated environment.The disclosed patent No. of State Intellectual Property Office is 95203723.8 " a kind of oil field shaft mouth packing box ", being provided with in the packing box body can be from the seal auto-feeder of both sides dismounting, this apparatus structure complexity, complex operation is because of longitudinal sealing causes sealing effectiveness poor.
The utility model content
The purpose of this utility model is a kind of concentricity that can regulate oil-extractor polish-rod and well head packing box automatically of design, avoids the seal eccentric wear, and good seal performance, need not to shut down the oil-extractor polish-rod mechanical seal device of emptying crude oil when changing seal.
The technical solution of the utility model is:
Oil connection lower flange and oil connection upper flange are housed in the oil pumping polish rod bottom, on oil connection upper flange top the sphere lower cover is housed, sphere lower cover lower end places between oil connection upper flange and the oil connection lower flange and by connecting bolt and connects, the tangent sphere locking box that is equipped with in sphere lower cover top, its outer connection is equipped with upper press cover, in the spherical locking box bearing baffle is housed successively from the bottom to top, axial antifriction bearing, the polishing cover, spring and sealing ring, spherical locking box top outer rim is equipped with seal box and by jackscrew and its location, sealing shroud is housed in the seal box, the seal box outer rim is equipped with the seal box overcoat, and the butter lid is equipped with in its upper end.
The utility model is because the employing sphere is locked the automatic translation aligning of movable sealing and seal box combines with the two-stage sealing of sealing shroud static seal, do not have leakage so can bear 5-20 MPa oil pressure when oil pumping, existing relatively oil pumper of effective time can improve 3-5 doubly.
Description of drawings
Accompanying drawing is the section of structure of utility model.
Description of reference numerals is as follows:
Butter lid 1, sealing ring 2, seal box 3, jackscrew 4, polishing cover 5, upper press cover 6, bearing baffle 7, oil connection upper flange 8, oil connection lower flange 9, connecting bolt 10, sphere lower cover 11, spherical locking box 12, axial antifriction bearing 13, spring 14, sealing shroud 15, seal box overcoat 16, oil pumping polish rod 17.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
In oil pumping polish rod (17) bottom oil connection lower flange (9) and oil connection upper flange (8) are housed, on oil connection upper flange (8) top sphere lower cover (11) is housed, sphere lower cover (11) lower end places between oil connection upper flange (8) and the oil connection lower flange (9) and by connecting bolt (10) and connects, the tangent sphere locking box (12) that is equipped with in sphere lower cover (11) top, its outer connection is equipped with upper press cover (6), in the spherical locking box (12) bearing baffle (7) is housed successively from the bottom to top, axial antifriction bearing (13), polishing cover (5), spring (14) and sealing ring (2), spherical locking box (12) top outer rim is equipped with seal box (3) and locatees in its both sides by jackscrew (4), sealing shroud (15) is housed in the seal box (3), seal box (3) outer rim is equipped with seal box overcoat (16), and butter lid (1) is equipped with in its upper end.
Sealing ring (2) and sealing shroud (15) tapering are 1:6.
Before the operation, unload loose connecting bolt (10) and upper press cover (6) earlier, above each parts of sphere lower cover (11) adapt to rational position automatically under the effect of eccentric force, center with sphere locking box (12) ball is a fulcrum, sealing ring (2) and sealing shroud (15) adapt to best concentric position automatically under the deflection function power of oil pumping polish rod (17), tighten upper press cover (6) and connecting bolt (10) at last, make sealing ring (2) under the effect of spring (14), be in lax off working state by the jackscrew (4) of regulating seal box (3) both sides, polishing cover (5), axial antifriction bearing (13) can be set to minimum with the gap of oil pumping polish rod (17) as far as possible.During operation, oil pumping polish rod (17) is only swung in small range in up and down, guarantee that oil pumping polish rod (17) bears very little rolling wearing and tearing, polishing cover (5) can be polished to the corrosion thing on its surface under the irregular swing of oil pumping polish rod (17), thereby guarantee effective sealing of oil pumping polish rod (17) and sealing ring (2) and sealing shroud (15), the butter that stores in the butter lid (1), can guarantee that each friction member carries out avoiding dry friction under good lubricating condition, thereby reach the optimum efficiency of sealing and prolong its application life.
The utility model is simple in structure, and is reasonable in design, good seal performance, and the effective time is long, tears open Unload easy for installationly, and need not emptying crude oil, protection of the environment can extensively be promoted the use of in oil exploitation, Has wide DEVELOPMENT PROSPECT.
Claims (3)
1. oil-extractor polish-rod mechanical seal device, be that sealing ring (2) and sealing shroud (15) are housed outside oil pumping polish rod (17), the outer seal box (3) that is equipped with of sealing shroud (15), seal box (3) outer rim is equipped with seal box overcoat (16), it is characterized in that oil connection lower flange (9) and oil connection upper flange (8) being housed in oil pumping polish rod (17) bottom, on oil connection upper flange (8) top sphere lower cover (11) is housed, sphere lower cover (11) lower end places between oil connection upper flange (8) and the oil connection lower flange (9) and by connecting bolt (10) and connects, the tangent sphere locking box (12) that is equipped with in sphere lower cover (11) top, its outer connection is equipped with upper press cover (6), in the spherical locking box (12) bearing baffle (7) is housed successively from the bottom to top, axial antifriction bearing (13), polish and overlap (5) and spring (14), spherical locking box (12) top outer rim is located seal box (3) by jackscrew (4) in its both sides.
2. oil-extractor polish-rod mechanical seal device according to claim 1 is characterized in that in seal box overcoat (16) upper end butter lid (1) being housed.
3. oil-extractor polish-rod mechanical seal device according to claim 1 is characterized in that sealing ring (2) and sealing shroud (15) tapering are 1: 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078850 CN2806754Y (en) | 2005-06-02 | 2005-06-02 | Mechanical sealer for polished rod of oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078850 CN2806754Y (en) | 2005-06-02 | 2005-06-02 | Mechanical sealer for polished rod of oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2806754Y true CN2806754Y (en) | 2006-08-16 |
Family
ID=36921055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078850 Expired - Fee Related CN2806754Y (en) | 2005-06-02 | 2005-06-02 | Mechanical sealer for polished rod of oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2806754Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756598A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Polish rod sealer |
| CN107100578A (en) * | 2017-04-18 | 2017-08-29 | 盐城金澳特石油机械有限公司 | The anti-pollution global function oil-pumping well head equipment of portable blowout prevention |
| CN107763068A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Ball bearing |
| CN111594086A (en) * | 2020-05-28 | 2020-08-28 | 延长油田股份有限公司定边采油厂 | Multi-section universal sealer for oil well head |
-
2005
- 2005-06-02 CN CN 200520078850 patent/CN2806754Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756598A (en) * | 2014-12-17 | 2016-07-13 | 中国石油天然气股份有限公司 | Polish rod sealer |
| CN105756598B (en) * | 2014-12-17 | 2018-07-13 | 中国石油天然气股份有限公司 | Polish rod sealer |
| CN107763068A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Ball bearing |
| CN107100578A (en) * | 2017-04-18 | 2017-08-29 | 盐城金澳特石油机械有限公司 | The anti-pollution global function oil-pumping well head equipment of portable blowout prevention |
| CN111594086A (en) * | 2020-05-28 | 2020-08-28 | 延长油田股份有限公司定边采油厂 | Multi-section universal sealer for oil well head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060816 |