CN201125698Y - Polish rod sealer hydraulic type second grade sealing device - Google Patents
Polish rod sealer hydraulic type second grade sealing device Download PDFInfo
- Publication number
- CN201125698Y CN201125698Y CNU2007200090484U CN200720009048U CN201125698Y CN 201125698 Y CN201125698 Y CN 201125698Y CN U2007200090484 U CNU2007200090484 U CN U2007200090484U CN 200720009048 U CN200720009048 U CN 200720009048U CN 201125698 Y CN201125698 Y CN 201125698Y
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- packing ring
- secondary seal
- polished rod
- 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 - Fee Related
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a polished rod sealer hydraulic type secondary sealing device, which comprises a shell, a hydraulic seal ring, the protection ring, a hydraulic filling opening and a main sealer, the structure of the device is characterized in that the shell comprises a joint and a secondary seal cavity, the hydraulic seal ring and the protection ring are arranged in the secondary seal cavity and fixed in the secondary seal cavity through the thread interface or the flanged joint of the main sealer, both ends of the outer side wall of the hydraulic seal ring are closely contacted with the relative inner walls of the secondary seal cavity to form a closed hydraulic cavity. The utility model uses a hydraulic pump to import hydraulic pressure through the hydraulic filling opening so as to cause the middle part of the hydraulic seal ring to contract along the circle center direction under a hydraulic pressure to put pressure on the polished rod, so that the goal of that the space between the oil well and the main sealer can be sealed to prevent the crude oil or gas in the oil well from leaking out and entering into the main sealer can be obtained. The utility model is characterized in having a simple structure, being easy to operate, and having a secondary seal material that is the hydraulic seal ring with a long service life.
Description
Affiliated technical field:
The utility model relates to a kind of fluid pressure type two stage sealing device that is applied to oil well wellhead equipment polished rod sealer, especially belongs to a kind of polished rod sealer fluid pressure type two stage sealing device.
Background technology:
The polished rod sealer of oil field sucker rod pumping machine is when work, need the encapsulant in the periodic replacement primary seal device, if polished rod sealer does not dispose two stage sealing device, then change the valve that needs before the encapsulant to close on all oil wells and the pipeline that oil transportation oil storage equipment is communicated with, and need be with the oil well release, make the oil well pressure inside reduce to zero, this will expend a large amount of working times.Adopt the polished rod sealer two stage sealing device, will operating efficiency that change encapsulant will be improved greatly.At present, the general two stage sealing device that polished rod sealer adopted mostly is mechanical type radial compression two stage sealing device or mechanical type axial compression two stage sealing device greatly, the two stage sealing device complex structure of these two kinds of forms, the secondary seal material failure is fast, the operation of changing the secondary seal material is also cumbersome, and cost of production is also than higher.
Summary of the invention:
The purpose of this utility model provides a kind of simple in structure, and is easy and simple to handle, the polished rod sealer fluid pressure type two stage sealing device of secondary seal material long service life.
The purpose of this utility model is achieved in that described polished rod sealer fluid pressure type two stage sealing device, comprise housing, the hydraulic packing ring, protection ring, hydraulic pressure inlet and primary seal device, be connected with housing under the primary seal device, its design feature is that described housing is made up of joint and secondary seal chamber, described hydraulic packing ring and protection ring place secondary seal chamber and hickey or flange socket by the primary seal device to be fixed on the secondary seal chamber, and the two ends of the lateral wall of hydraulic packing ring closely contact the hydraulic cavities that forms sealing with the respective inner walls in secondary seal chamber; Hydraulic cavities is by the external hydraulic pump of hydraulic pressure inlet.The utility model utilizes hydraulic pump to pass through hydraulic pressure inlet input hydraulic pressure, exerted pressure to polished rod to the contraction of center of circle direction under the effect of hydraulic pressure in the middle part of hydraulic packing ring, the formation sealing stops the crude oil of oil well inside or gas enters purpose from the primary seal device to external leakage between oil well and primary seal device thereby reach.Protection ring is installed and protection hydraulic packing ring during work and during the producing well shaft mouth operation at polished rod sealer, makes it avoid the external force damage.
The purpose of this utility model can also be achieved through the following technical solutions, described polished rod sealer fluid pressure type two stage sealing device, its characteristics are that the hydraulic packing ring of tool elastic extension and its side that is positioned at hydraulic cavities are provided with groove or the network-like communication paths or the latticed communication paths that can make the hydraulic fluid circulation for the hydraulic packing ring, and promptly the close side (being the middle part of lateral wall) of the middle part of hydraulic packing ring and secondary seal cavity wall is provided with groove or network-like communication paths or the latticed communication paths that makes liquid communication.Utilize hydraulic pump to pass through hydraulic pressure inlet input hydraulic pressure, exerted pressure to polished rod to the contraction of center of circle direction under the effect of hydraulic pressure in the middle part of hydraulic packing ring, the formation sealing stops the crude oil of oil well inside or gas enters purpose from the primary seal device to external leakage between oil well and primary seal device thereby reach.
Advantage of the present utility model: utilize hydraulic pump to pass through hydraulic pressure inlet input hydraulic pressure, exerted pressure to polished rod to the contraction of center of circle direction under the effect of hydraulic pressure in the middle part of hydraulic packing ring, the formation sealing stops the crude oil of oil well inside or gas enters purpose from the primary seal device to external leakage between oil well and primary seal device thereby reach.The hydraulic packing ring does not contact with polished rod substantially in the polished rod sealer normal work period, so the hydraulic packing ring weares and teares hardly.The utlity model has simple in structurely, easy and simple to handle, the secondary seal material is the advantage of the long service life of hydraulic packing ring.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of hydraulic packing ring of the present utility model.
Among the figure: housing 1, hydraulic packing ring 2, protection ring 3, hydraulic pressure inlet 4, primary seal device 5.
The specific embodiment:
Below in conjunction with drawings and Examples structure of the present utility model and operating principle and the course of work are elaborated:
As shown in Figure 1 and Figure 2, described polished rod sealer fluid pressure type two stage sealing device, comprise housing 1, hydraulic packing ring 2, protection ring 3, hydraulic pressure inlet 4 and primary seal device 5, the primary seal device is connected with housing 15 times, its design feature is that described housing 1 is made up of joint and secondary seal chamber, described hydraulic packing ring 2 and protection ring 3 place secondary seal chamber and hickey or flange socket by primary seal device 5 to be fixed on the secondary seal chamber, and the two ends of the lateral wall of hydraulic packing ring 2 closely contact the hydraulic cavities that forms sealing with the respective inner walls in secondary seal chamber; Hydraulic cavities is by hydraulic pressure inlet 4 external hydraulic pumps.Utilize hydraulic pump to pass through hydraulic pressure inlet 4 input hydraulic pressure liquid, exerted pressure to polished rod to the contraction of center of circle direction under the effect of hydraulic pressure in the middle part of hydraulic packing ring 2, the formation sealing stops the crude oil of oil well inside or gas enters purpose from primary seal device 5 to external leakage between oil well and primary seal device 5 thereby reach.Hydraulic packing ring 2 is made by the elastomeric material that rubber etc. has good retractility, the close side (being the middle part of lateral wall) of the middle part of hydraulic packing ring 2 and secondary seal cavity wall is provided with groove or network-like communication paths or the latticed communication paths that makes liquid communication, the two ends of the lateral wall of hydraulic packing ring 2 closely contact with the inwall in secondary seal chamber and form sealing, constitute the hydraulic cavities of sealing.The utility model utilizes hydraulic pump to pass through hydraulic pressure inlet 4 input hydraulic pressures, middle part inside contraction under the effect of hydraulic pressure of hydraulic packing ring 2 exerted pressure to polished rod, and the formation sealing stops the crude oil of oil well inside or gas enters purpose from primary seal device 5 to external leakage between oil well and primary seal device 5 thereby reach.Protection ring 3 is installed and protection hydraulic packing ring 2 during work and during the producing well shaft mouth operation at polished rod sealer, makes it avoid the damage of external force.Polished rod sealer fluid pressure type two stage sealing device of the present utility model is connected with the producing well well head by the joint on the housing 1, perhaps the joint with the tuningout device for regulating direction is connected, connected mode can adopt and be threaded, and flange connects or is welded to connect, and can depend on actual need and decides.Oil-extractor polish-rod passes the centre bore of hydraulic packing ring 2, protection ring 3 and primary seal device 5; when the encapsulant in the needs replacing primary seal device 5; utilize hydraulic pump to pass through hydraulic pressure inlet 4 input hydraulic pressures; middle part inside contraction under the effect of hydraulic pressure of hydraulic packing ring 2 exerted pressure to polished rod; stop the crude oil or the gas of oil well inside to enter the primary seal device thereby between oil well and primary seal device, form sealing, finish fast so that change encapsulant everything goes well with your work to external leakage.After the end-of-job of the encapsulant of replacing primary seal device 5, removal is pulled down hydraulic pump to the hydraulic pressure that hydraulic packing ring 2 is applied, and polished rod sealer can put into operation once more.Hydraulic packing ring 2 does not contact with polished rod substantially in the polished rod sealer normal work period, so hydraulic packing ring 2 weares and teares hardly.Polished rod sealer fluid pressure type two stage sealing device of the present utility model has simple in structurely, easy and simple to handle, and the secondary seal material is the advantage of the long service life of hydraulic packing ring 2.If in order to reduce the size in secondary seal chamber, also can not adopt protection ring 3, so also can not influence basic function of the present utility model.
Claims (2)
1, a kind of polished rod sealer fluid pressure type two stage sealing device, comprise housing (1), hydraulic packing ring (2), protection ring (3), hydraulic pressure inlet (4) and primary seal device (5), on housing (1), be connected with primary seal device (5), it is characterized in that described housing (1) is made up of joint and secondary seal chamber, described hydraulic packing ring (2) and protection ring (3) place secondary seal chamber and hickey or flange socket by primary seal device (5) to be fixed on the secondary seal chamber, and the two ends of the lateral wall of hydraulic packing ring (2) closely contact the hydraulic cavities that forms sealing with the respective inner walls in secondary seal chamber; Hydraulic cavities is by the external hydraulic pump of hydraulic pressure inlet (4).
2, polished rod sealer fluid pressure type two stage sealing device according to claim 1 is characterized in that hydraulic packing ring (2) can make groove or the network-like communication paths or the latticed communication paths of hydraulic fluid circulation for the hydraulic packing ring of tool elastic extension and its side that is positioned at hydraulic cavities are provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200090484U CN201125698Y (en) | 2007-12-11 | 2007-12-11 | Polish rod sealer hydraulic type second grade sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200090484U CN201125698Y (en) | 2007-12-11 | 2007-12-11 | Polish rod sealer hydraulic type second grade sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125698Y true CN201125698Y (en) | 2008-10-01 |
Family
ID=39999169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200090484U Expired - Fee Related CN201125698Y (en) | 2007-12-11 | 2007-12-11 | Polish rod sealer hydraulic type second grade sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125698Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330543A (en) * | 2011-05-20 | 2012-01-25 | 中国石油化工股份有限公司 | Sucker rod ring seal movable sealer |
| CN104675359A (en) * | 2015-01-21 | 2015-06-03 | 铜仁中能天然气有限公司 | Safe shale gas well plugging device |
| RU2684261C1 (en) * | 2018-07-24 | 2019-04-04 | Общество с ограниченной ответственностью "Научно-производственное предприятие "СибБурМаш" | Wellhead rotary sealer |
| CN109736739A (en) * | 2019-01-24 | 2019-05-10 | 刘胜益 | A kind of intelligence well mouth sealing device |
| CN115306342A (en) * | 2022-10-11 | 2022-11-08 | 克拉玛依红山油田有限责任公司 | Glue injection guiding sealing blowout preventer |
-
2007
- 2007-12-11 CN CNU2007200090484U patent/CN201125698Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330543A (en) * | 2011-05-20 | 2012-01-25 | 中国石油化工股份有限公司 | Sucker rod ring seal movable sealer |
| CN104675359A (en) * | 2015-01-21 | 2015-06-03 | 铜仁中能天然气有限公司 | Safe shale gas well plugging device |
| RU2684261C1 (en) * | 2018-07-24 | 2019-04-04 | Общество с ограниченной ответственностью "Научно-производственное предприятие "СибБурМаш" | Wellhead rotary sealer |
| CN109736739A (en) * | 2019-01-24 | 2019-05-10 | 刘胜益 | A kind of intelligence well mouth sealing device |
| CN115306342A (en) * | 2022-10-11 | 2022-11-08 | 克拉玛依红山油田有限责任公司 | Glue injection guiding sealing blowout preventer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111692064A (en) | Long-life plunger pump hydraulic end | |
| CN201125698Y (en) | Polish rod sealer hydraulic type second grade sealing device | |
| CN105484694A (en) | Water-cooling type oil pumping machine wellhead polished rod sealer | |
| CN110608002A (en) | Washing pipe assembly | |
| CN201126021Y (en) | Radial pressing type hydraulic seal cavity | |
| CN106287046B (en) | A kind of highly pressurised liquid two way seal pipe joint | |
| CN205207804U (en) | A unilateral control valve for plunger pump | |
| CN217632894U (en) | Mining emulsion plunger pump | |
| CN212479482U (en) | Long-life plunger pump hydraulic end | |
| CN208900338U (en) | A kind of piston type reciprocating booster pump | |
| CN208900339U (en) | A kind of plunger type reciprocating booster pump | |
| WO2022011712A1 (en) | Plunger pump hydraulic end having long service life | |
| CN201184171Y (en) | Bias-wearing-proof pumping unit | |
| CN203463278U (en) | Combination valve | |
| CN103486019B (en) | Combination brake switch and proporting | |
| CN201434076Y (en) | Rubber-lined elastic packing box | |
| CN102878381A (en) | Maintenance-free external-pressing direct buried expansion joint | |
| CN201373107Y (en) | Hydraulic stuffing box | |
| CN202417410U (en) | Well washing packer | |
| CN205743833U (en) | A kind of high pressure VR blocks up | |
| CN201326863Y (en) | Direct-buried internal pressure compensator | |
| CN203499965U (en) | Double-layer self-sealing overlength stroke oil well pump | |
| CN201802348U (en) | Removable internal oil tube stopper | |
| CN201546657U (en) | Polished rod break-off blowout preventer | |
| CN215762189U (en) | Packing is with automatic tight device that expands |
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: 20081001 Termination date: 20101211 |