CN201367882Y - Thermal recovery stuffing box capable of adjusting center with low pretightening force - Google Patents
Thermal recovery stuffing box capable of adjusting center with low pretightening force Download PDFInfo
- Publication number
- CN201367882Y CN201367882Y CNU2009203010616U CN200920301061U CN201367882Y CN 201367882 Y CN201367882 Y CN 201367882Y CN U2009203010616 U CNU2009203010616 U CN U2009203010616U CN 200920301061 U CN200920301061 U CN 200920301061U CN 201367882 Y CN201367882 Y CN 201367882Y
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- China
- Prior art keywords
- packing body
- pipe nipple
- pressure cap
- tightening force
- heat extraction
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- Expired - Lifetime
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Abstract
The utility model relates to a thermal recovery stuffing box in oil production, in particular to a thermal recovery stuffing box capable of adjusting center with low pretightening force, which comprises a low stuffing body, a pressure cap, a short node and a pumping rod, wherein packing material is arranged between the lower stuffing body and the pumping rod, the lower portion of the lower stuffing body is provided with the short node, the lower surface of the lower stuffing body is arranged on the upper surface of the short node, the lower portion of the lower stuffing body is provided with a convex edge, the top portion of the pressure cap is provided with a mounting hole, the upper portion of the pressure cap is sleeved on the lower stuffing body through a mounting hole, the inner side of the lower portion of the pressure cap is fixedly connected with the outer side of the upper end of the short node, and the inner diameter of the mounting hole is bigger than the outer diameter of the lower stuffing body. The thermal recovery stuffing box capable of adjusting center with low pretightening force has reasonable and compact structure and convenient use, and reduces the structure size of the connecting position of a center adjusting mechanism of the thermal recovery stuffing box through a hollow metal O-shaped seal ring provided with a hole, thereby the thermal recovery stuffing box can be mounted and used in limited operation space, and the thermal recovery stuffing box has the characteristics of small volume, low sealing pretightening force, reliable sealing and high temperature resistance, can adjust the eccentric center of the pumping rod and a well head, thereby effectively improving oil production efficiency.
Description
One, technical field
The utility model 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, adjust between sucker rod and the wellhead assembly eccentric.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 made 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, 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 utility model provides a kind of low pre-tightening force adjustable heat extraction packing box, and it can effectively solve existing thermal recovery packing box can not be adjusted sucker rod and wellhead assembly off-centre on two-tube thermal production well mouth problem.
The technical solution of the utility model realizes by 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 by 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 further optimization and/or improvements below to above-mentioned utility model technical scheme:
The lower inside of above-mentioned pressure cap and the outside, the upper end of pipe nipple can be fixed together by 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 by screw thread, the top and the top cover of last packing body are fixed together by 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.
The utility model reasonable and compact in structure, easy to use, it is by reducing the physical dimension of thermal recovery packing box core-regulating mechanism connecting portion, thereby can install and use in the limited operation space, have volume little, the sealing pretightning force low, the sealing reliable, resistant to elevated temperatures characteristics, 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 schematic diagram for the master of the utility model most preferred embodiment.
Accompanying drawing 2 is the plan structure schematic diagram of the type hollow metal O-ring seals with holes in the accompanying drawing 1.
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, 5 is installing hole, and 6 is the aligning chamber, and 7 is sucker rod, 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, 14 is top cover, and 15 are airtight and watertight padding, and A is the internal diameter of installing hole, 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 utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further described:
As shown in Figure 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 by 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.By pressure cap 4 flange connectors 2 and pipe nipple 3 can make overall structure compact and the assembling easier; By 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 made further optimization and/or improvements:
As shown in Figure 1, the outside, the upper end of the lower inside of pressure cap 4 and pipe nipple 3 is fixed together by screw thread.Be threaded and make overall structure compact more.
As shown in Figure 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 by screw thread, the top of last packing body 13 and top cover 14 are fixed together by 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.
As shown in Figure 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.
Shown in accompanying drawing 1,2,3, 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 and sealing ring cavity 10 are connected.During work, working media enters in the sealing ring cavity 10 by 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.
As shown in Figure 1, connecting thread 12 is arranged at the bottom of pipe nipple 3.Pipe nipple 3 is connected by the wellhead assembly of connecting thread 12 and bottom.
Above technical characterictic has constituted most preferred embodiment of the present utility model, 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 the utility model most preferred embodiment is: at first sucker rod 7 is passed pipe nipple 3, and pipe nipple 3 is fixedly connected on the wellhead assembly by connecting thread 12, then install type hollow metal O-ring seals 9 with holes in annular groove 8; 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, adjust the position of packing body 1 relative pipe nipple 3 down, make sucker rod be positioned at the position, middle in the packing body 1 down, screw pressure cap 4, 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 is to pressing down pipe nipple 3, therefore the lower surface of flange 2 is pressed on the upper surface of 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, realized sealing between flange 2 and the pipe nipple 3 by type hollow metal O-ring seals 9 with holes.Afterwards, only need install packing in the packing body 1 down, the upper part of packing box and following packing body 1 are assembled get final product.
Claims (10)
1, a kind of 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 by 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.
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 by 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 by screw thread, the top and the top cover of last packing body are fixed together by 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 there is annular groove the upper end of pipe nipple, and sealing ring is installed in the annular groove.
5, low pre-tightening force adjustable heat extraction packing box according to claim 3 is characterized in that there is annular groove the upper end of pipe nipple, and sealing ring is installed in the annular groove.
6, low pre-tightening force adjustable heat extraction packing box according to claim 4, it is characterized in that sealing ring is a 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.
7, low pre-tightening force adjustable heat extraction packing box according to claim 5, it is characterized in that sealing ring is a 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.
8, 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.
9, 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.
10, low pre-tightening force adjustable heat extraction packing box according to claim 7 is characterized in that connecting thread is arranged at the bottom of pipe nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009203010616U CN201367882Y (en) | 2009-03-04 | 2009-03-04 | Thermal recovery stuffing box capable of adjusting center with low pretightening force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009203010616U CN201367882Y (en) | 2009-03-04 | 2009-03-04 | Thermal recovery stuffing box capable of adjusting center with low pretightening force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201367882Y true CN201367882Y (en) | 2009-12-23 |
Family
ID=41486776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009203010616U Expired - Lifetime CN201367882Y (en) | 2009-03-04 | 2009-03-04 | Thermal recovery stuffing box capable of adjusting center with low pretightening force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201367882Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514616B (en) * | 2009-03-04 | 2012-10-03 | 新疆石油管理局机械制造总公司 | Low pre-tightening force adjustable heat extraction packing box |
-
2009
- 2009-03-04 CN CNU2009203010616U patent/CN201367882Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514616B (en) * | 2009-03-04 | 2012-10-03 | 新疆石油管理局机械制造总公司 | Low pre-tightening force adjustable heat extraction packing box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091223 Effective date of abandoning: 20090304 |