CN101514616B - Low pre-tightening force adjustable heat extraction packing box - Google Patents
Low pre-tightening force adjustable heat extraction packing box Download PDFInfo
- Publication number
- CN101514616B CN101514616B CN200910300686A CN200910300686A CN101514616B CN 101514616 B CN101514616 B CN 101514616B CN 200910300686 A CN200910300686 A CN 200910300686A CN 200910300686 A CN200910300686 A CN 200910300686A CN 101514616 B CN101514616 B CN 101514616B
- Authority
- CN
- China
- Prior art keywords
- packing body
- pipe nipple
- pressure cap
- heat extraction
- sucker rod
- 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
Images
Abstract
The invention relates to a heat extraction packing box in petroleum production, which is a low pre-tightening force adjustable heat extraction packing box comprising a lower packing body, a pressure cap, a pipe nipple and a sucker rod; sealing filler is filled between the lower packing body and the sucker rod; the pipe nipple is arranged below the lower packing body, a lower surface seat of the lower packing body is arranged on an upper surface of the pipe nipple; a flange is arranged below the lower packing body, a mounting hole is arranged at top of the pressure cap, the upper part of the pressure cap is sleeved on the lower packing body through the mounting hole, and the inner side of the lower part of the pressure cap is connected with the outside of the upper part of the pipe nipple; and the inner diameter of the mounting hole is larger than the outer diameter of the lower packing body. The invention has reasonable and compact structure, is convenient for using, can reduce structure size of a connection part of an adjusting mechanism of the heat extraction packing box through a perforated hollow metal O-shaped sealing ring so as to be mounted and used in a limited operation space, has characteristics of small volume, low seal pre-tightening force, reliable seal and high temperature resistance, and can adjust eccentric of the sucker rod and a well head device, thereby effectively increasing oil extraction efficiency.
Description
One, technical field
The present invention relates to the thermal recovery packing box in the Petroleum Production, is a kind of low pre-tightening force adjustable heat extraction packing box.
Two, background technology
The thermal recovery packing box is an indispensable device in the thickened oil recovery, and its effect one is the sealing oil-extractor polish-rod, the 2nd, and eccentric between adjustment sucker rod and the wellhead assembly.Its working environment is in 330 degrees centigrade vapours environment; Therefore thermal recovery packing box core-regulating mechanism potted component can not adopt nonmetals; And the general steel ring formula processed by metal material or the core-regulating mechanism of red copper gasket type of adopting of potted component; This core-regulating mechanism of two types all is to compress potted component by bolt, and the physical dimension of its connection is big, and the desired seal pretightning force is also high.Along with the application of two-tube thermal recovery well head device, packing box and test gate valve to be installed simultaneously in the confined space.Because of the physical dimension of thermal recovery packing box steel ring formula or the connection of red copper chip core-regulating mechanism is big, can't install, have to adopt tubing round thread directly to connect, and the function of the cancellation tuningout heart.Can't adjust the off-centre of sucker rod and wellhead assembly because of packing box, cause in the oil pumping process, between sucker rod and the packing box eccentric wear take place, the packing that makes packing box is quick-wearing very, causes crude oil leakage.Will close down oil pumper this moment, the dismounting packing box, and the packing that more renews causes the short-term of oil well to stop production, thereby causes oil recovery efficiency to reduce.
Three, summary of the invention
The invention provides a kind of low pre-tightening force adjustable heat extraction packing box, it can effectively solve existing thermal recovery packing box can not adjust sucker rod and the eccentric problem of wellhead assembly on two-tube thermal production well mouth.
Technical scheme of the present invention realizes through following measure: a kind of low pre-tightening force adjustable heat extraction packing box comprises packing body, pressure cap, pipe nipple and sucker rod down; Between packing body and the sucker rod airtight and watertight padding is being arranged down; Below following packing body, pipe nipple is arranged, the soffit seat of following packing body is on the upper surface of pipe nipple; Flange is arranged at the bottom at following packing body, and installing hole is arranged at the top of pressure cap, and the top of pressure cap is sleeved on down on the packing body through installing hole, and the lower inside of pressure cap and the outside, the upper end of pipe nipple are fixed together; The internal diameter of installing hole is greater than the following external diameter of packing body, and the external diameter of flange is less than the internal diameter of pressure cap and greater than the internal diameter of installing hole; The top of pressure cap is pressed on the flange and packing body and pipe nipple is fixed together, forms the aligning chamber between following packing body, pressure cap and the pipe nipple.
Be to the further optimization of foregoing invention technical scheme below or/and improve:
The lower inside of above-mentioned pressure cap and the outside, the upper end of pipe nipple can be fixed together through screw thread.
On the packing body packing body can be installed under above-mentioned, top cover can be installed on the last packing body; The lower inside of the upper outside of following packing body and last packing body is fixed together through screw thread; The top and the top cover of last packing body are fixed together through screw thread; Through hole is arranged on the top cover and be sleeved on the sucker rod, between last packing body and sucker rod, airtight and watertight padding is arranged.
Can there be annular groove the upper end of above-mentioned pipe nipple, and sealing ring is installed in the annular groove.
Above-mentioned sealing ring can be type hollow metal O-ring seals with holes; There is the sealing ring cavity inside of type hollow metal O-ring seals with holes; The inboard of type hollow metal O-ring seals with holes has and is no less than one radial hole, and radial hole and sealing ring cavity are connected.
Connecting thread can be arranged at the bottom of above-mentioned pipe nipple.
Reasonable and compact in structure of the present invention; Easy to use; It is through reducing the physical dimension of thermal recovery packing box core-regulating mechanism connecting portion, thereby can install and use in the limited operation space, has that volume is little, the sealing pretightning force is low, reliable, the resistant to elevated temperatures characteristics of sealing; Can adjust the off-centre of sucker rod and wellhead assembly, thereby improve oil recovery efficiency effectively.
Four, description of drawings
Accompanying drawing 1 is looked the sectional structure sketch map for the master of most preferred embodiment of the present invention.
Accompanying drawing 2 is the plan structure sketch map of the type hollow metal O-ring seals with holes in the accompanying drawing 1.
Accompanying drawing 3 is the sectional structure sketch map at C-C place in the accompanying drawing 2.
Coding in the accompanying drawing is respectively: 1 is following packing body, and 2 is flange, and 3 is pipe nipple, and 4 is pressure cap, and 5 is installing hole; 6 is the aligning chamber, and 7 is sucker rod, and 8 is annular groove, and 9 is type hollow metal O-ring seals with holes, and 10 is the sealing ring cavity; 11 is radial hole, and 12 is connecting thread, and 13 is last packing body, and 14 is top cover, and 15 are airtight and watertight padding; A is the internal diameter of installing hole, and B is the external diameter of following packing body, and E is the external diameter of flange, and F is the internal diameter of pressure cap.
Five, the specific embodiment
The present invention does not receive the restriction of following embodiment, can confirm concrete embodiment according to technical scheme of the present invention and actual conditions.
Below in conjunction with most preferred embodiment and accompanying drawing the present invention is further described:
Shown in accompanying drawing 1, this low pre-tightening force adjustable heat extraction packing box comprises packing body 1, pressure cap 4, pipe nipple 3 and sucker rod 7 down; Between packing body 1 and the sucker rod 7 airtight and watertight padding 15 is being arranged down; Below following packing body 1, pipe nipple 3 is arranged, the soffit seat of following packing body 1 is on the upper surface of pipe nipple 3; Flange 2 is arranged at the bottom at following packing body 1, and installing hole 5 is arranged at the top of pressure cap 4, and the top of pressure cap 4 is sleeved on down on the packing body 1 through installing hole 5, and the outside, upper end of the lower inside of pressure cap 4 and pipe nipple 3 is fixed together; The internal diameter A of installing hole is greater than the following external diameter B of packing body, and the external diameter E of flange is less than the internal diameter F of pressure cap and greater than the internal diameter A of installing hole; The top of pressure cap 4 is pressed on the flange 2 and packing body 1 and pipe nipple 3 is fixed together, forms aligning chamber 6 between following packing body 1, pressure cap 4 and the pipe nipple 3.Can make overall structure compact and assembling is easier through pressure cap 4 flange connectors 2 and pipe nipple 3; Through adjusting down the position of packing body 1 and flange 2 relative pressure caps 4, promptly the off-centre between sucker rod 7 and the wellhead assembly can be realized adjusting in the size of a certain side in aligning chamber 6.
Can according to actual needs above-mentioned low pre-tightening force adjustable heat extraction packing box be done further to optimize or/and improve:
Shown in accompanying drawing 1, the outside, the upper end of the lower inside of pressure cap 4 and pipe nipple 3 is fixed together through screw thread.Be threaded and make overall structure compact more.
Shown in accompanying drawing 1, on the following packing body 1 packing body 13 is installed, on the last packing body 13 top cover 14 is installed; The lower inside of the upper outside of following packing body 1 and last packing body 13 is fixed together through screw thread; The top of last packing body 13 and top cover 14 are fixed together through screw thread; Through hole is arranged on the top cover 14 and be sleeved on the sucker rod 7, between last packing body 13 and sucker rod 7, airtight and watertight padding 15 is arranged.
Shown in accompanying drawing 1, there is annular groove 8 upper end of pipe nipple 3, in the annular groove 8 sealing ring is installed.Sealing ring makes the sealing of junction more reliable.
Like accompanying drawing 1,2, shown in 3; Sealing ring is a type hollow metal O-ring seals 9 with holes; There is sealing ring cavity 10 inside of type hollow metal O-ring seals 9 with holes; There is the radial hole 11 that is no less than the inboard of type hollow metal O-ring seals 9 with holes, and radial hole 11 is connected with sealing ring cavity 10.During work; Working media enters in the sealing ring cavity 10 through radial hole 11; The pressure of corresponding work medium also passes on the inwall of type hollow metal O-ring seals 9 with holes, thereby has reached the self sealss effect, does not therefore need higher pretightning force just can realize sealing.Use type hollow metal O-ring seals 9 with holes can reach reliable, the resistant to elevated temperatures requirement of sealing.
Shown in accompanying drawing 1, connecting thread 12 is arranged at the bottom of pipe nipple 3.Pipe nipple 3 is connected through the wellhead assembly of connecting thread 12 and bottom.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The course of work of most preferred embodiment of the present invention is: at first sucker rod 7 is passed pipe nipple 3, and pipe nipple 3 is fixedly connected on the wellhead assembly through connecting thread 12, then in annular groove 8, install type hollow metal O-ring seals 9 with holes; Again pressure cap 4 is sleeved on down on the bottom of packing body 1, sucker rod 7 is passed pressure cap 4 reach packing body 1 down, make pressure cap 4 bottoms be sleeved on the top of pipe nipple 3; Adjustment is the position of packing body 1 relative pipe nipple 3 down, makes sucker rod be positioned at the position, middle, the pressure cap 4 of screwing in the packing body 1 down; Because the lower surface of annular boss 5 is pressed on the upper surface of flange 2; Pressure cap 4 downward belling edge 2, flange 2 are pressed on the upper surface of pipe nipple 3 lower surface of flange 2 to pressing down pipe nipple 3; Type hollow metal O-ring seals 9 with holes is arranged again in the annular groove 8 on pipe nipple 3 upper surfaces, therefore realized the sealing between flange 2 and the pipe nipple 3 through type hollow metal O-ring seals 9 with holes.Afterwards, only need install packing in the packing body 1 down, the upper part and the following packing body 1 of packing box assembled get final product.
Claims (5)
1. a low pre-tightening force adjustable heat extraction packing box is characterized in that comprising packing body, pressure cap, pipe nipple and sucker rod down; Between packing body and the sucker rod airtight and watertight padding is being arranged down; Below following packing body, pipe nipple is arranged, the soffit seat of following packing body is on the upper surface of pipe nipple; Flange is arranged at the bottom at following packing body, and installing hole is arranged at the top of pressure cap, and the top of pressure cap is sleeved on down on the packing body through installing hole, and the lower inside of pressure cap and the outside, the upper end of pipe nipple are fixed together; The internal diameter of installing hole is greater than the following external diameter of packing body, and the external diameter of flange is less than the internal diameter of pressure cap and greater than the internal diameter of installing hole; The top of pressure cap is pressed on the flange and packing body and pipe nipple is fixed together, forms the aligning chamber between following packing body, pressure cap and the pipe nipple; Wherein, there is annular groove the upper end of pipe nipple, and sealing ring is installed in the annular groove,
Sealing ring is a type hollow metal O-ring seals with holes, and there is the sealing ring cavity inside of type hollow metal O-ring seals with holes, and the inboard of type hollow metal O-ring seals with holes has and is no less than one radial hole, and radial hole and sealing ring cavity are connected.
2. low pre-tightening force adjustable heat extraction packing box according to claim 1 is characterized in that the lower inside of pressure cap and the outside, upper end of pipe nipple are fixed together through screw thread.
3. low pre-tightening force adjustable heat extraction packing box according to claim 1 and 2 is characterized in that on the packing body packing body being installed down, and top cover is installed on the last packing body; The lower inside of the upper outside of following packing body and last packing body is fixed together through screw thread; The top and the top cover of last packing body are fixed together through screw thread; Through hole is arranged on the top cover and be sleeved on the sucker rod, between last packing body and sucker rod, airtight and watertight padding is arranged.
4. low pre-tightening force adjustable heat extraction packing box according to claim 1 and 2 is characterized in that connecting thread is arranged at the bottom of pipe nipple.
5. low pre-tightening force adjustable heat extraction packing box according to claim 3 is characterized in that connecting thread is arranged at the bottom of pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910300686A CN101514616B (en) | 2009-03-04 | 2009-03-04 | Low pre-tightening force adjustable heat extraction packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910300686A CN101514616B (en) | 2009-03-04 | 2009-03-04 | Low pre-tightening force adjustable heat extraction packing box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101514616A CN101514616A (en) | 2009-08-26 |
| CN101514616B true CN101514616B (en) | 2012-10-03 |
Family
ID=41039221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910300686A Active CN101514616B (en) | 2009-03-04 | 2009-03-04 | Low pre-tightening force adjustable heat extraction packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514616B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775791A (en) * | 2014-02-24 | 2014-05-07 | 马要武 | High-air-tightness electromechanical device shell |
| CN111287683A (en) * | 2018-12-07 | 2020-06-16 | 汪高松 | Wellhead polish rod sealing device of oil pumping machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208095Y (en) * | 1994-07-18 | 1995-09-20 | 东营市东营区万华工业有限公司 | Smooth rod sealer |
| CN2278101Y (en) * | 1996-10-14 | 1998-04-08 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院 | Oil pump self-closing type polished-rod sealing and wellhead eccentricity adjusting device |
| CN2616664Y (en) * | 2003-05-16 | 2004-05-19 | 程世英 | Adjustable high-pressure blowout-preventing polish rod packing box |
| RU2309240C1 (en) * | 2006-03-09 | 2007-10-27 | ОАО "Татнефть" им. В.Д. Шашина | Oil production pumping wellhead assembly |
| CN200999861Y (en) * | 2006-11-12 | 2008-01-02 | 刘光新 | Flexible liquid filling hole cavity composite sealing ring |
| CN201367882Y (en) * | 2009-03-04 | 2009-12-23 | 新疆石油管理局机械制造总公司 | Thermal recovery stuffing box capable of adjusting center with low pretightening force |
-
2009
- 2009-03-04 CN CN200910300686A patent/CN101514616B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208095Y (en) * | 1994-07-18 | 1995-09-20 | 东营市东营区万华工业有限公司 | Smooth rod sealer |
| CN2278101Y (en) * | 1996-10-14 | 1998-04-08 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院 | Oil pump self-closing type polished-rod sealing and wellhead eccentricity adjusting device |
| CN2616664Y (en) * | 2003-05-16 | 2004-05-19 | 程世英 | Adjustable high-pressure blowout-preventing polish rod packing box |
| RU2309240C1 (en) * | 2006-03-09 | 2007-10-27 | ОАО "Татнефть" им. В.Д. Шашина | Oil production pumping wellhead assembly |
| CN200999861Y (en) * | 2006-11-12 | 2008-01-02 | 刘光新 | Flexible liquid filling hole cavity composite sealing ring |
| CN201367882Y (en) * | 2009-03-04 | 2009-12-23 | 新疆石油管理局机械制造总公司 | Thermal recovery stuffing box capable of adjusting center with low pretightening force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101514616A (en) | 2009-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202520265U (en) | Gas production well head device with metallic seals | |
| CN204060602U (en) | A kind of bimetallic (spring cone) seal formula casing head | |
| CN202081851U (en) | Polish rod sealing apparatus | |
| CN103216213A (en) | Underground annular control valve | |
| CN101514616B (en) | Low pre-tightening force adjustable heat extraction packing box | |
| CN101333916A (en) | Closed well washing device | |
| WO2016155319A1 (en) | Multi-protection corrugated pipe stop valve for chlorine use | |
| CN202596657U (en) | Expanding packer | |
| CN201367882Y (en) | Thermal recovery stuffing box capable of adjusting center with low pretightening force | |
| CN201126021Y (en) | Radial pressing type hydraulic seal cavity | |
| CN201671585U (en) | Eccentric wear and spray prevention well mouth seal device | |
| CN203769705U (en) | Polished rod sealing device for thermal recovery | |
| CN200985764Y (en) | Blowout preventer of well head of oil production with sucker-rod pump | |
| CN203627856U (en) | Forged steel gate valve | |
| CN105443067A (en) | Metal sealing tubing hanger for fracturing and gas recovery wellhead | |
| CN202531080U (en) | Wellhead sealing hanger | |
| CN101956539A (en) | Follow-up centering sealing device of pumping well head | |
| CN202055793U (en) | Metal hard sealing casing head | |
| CN214699215U (en) | Angle type conical surface sealing stop valve with pressure relief function | |
| CN2854063Y (en) | Test tube suspension sealing device of thickened oil horinontal well | |
| CN204060600U (en) | Self-styled wellhead assembly | |
| CN204573305U (en) | A kind of valve rod leak-proof structure of New Type of Cryogenic Ball Valve | |
| CN205400655U (en) | Preventer is proclaimed oneself to high pressure | |
| CN2784580Y (en) | Hydraulic locking packer | |
| CN202560149U (en) | Full metal seal slip type sleeve head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |