CN201517386U - Automatic blowout-prevention polished rod sealer - Google Patents
Automatic blowout-prevention polished rod sealer Download PDFInfo
- Publication number
- CN201517386U CN201517386U CN2009200307705U CN200920030770U CN201517386U CN 201517386 U CN201517386 U CN 201517386U CN 2009200307705 U CN2009200307705 U CN 2009200307705U CN 200920030770 U CN200920030770 U CN 200920030770U CN 201517386 U CN201517386 U CN 201517386U
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- China
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- packing
- automatic
- sealing
- polished rod
- blowout
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- Expired - Fee Related
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Abstract
An automatic blowout-prevention polished rod sealer is applied for sucker-rod pump oil-production well heads in the early development period of an oilfield that has un-stable strata pressure and may generate packing blowout, and when the packing is worn to generate blowout, the well head can be sealed automatically by the automatic blowout-prevention polished rod sealer that also has functions of quick assembling and disassembling of packing and automatic offset adjusting. The sealer consists of a quick assembling and disassembling packing mechanism, an automatic blowout prevention mechanism and an automatic offset adjusting mechanism that are connected in sequence from top to bottom. The quick assembling and disassembling packing mechanism consists of a helical guide bush (1), a back bracket (3) and a packing kit (6), the helical guide bush (1) and the back bracket (3) are in a screwed connection and clamped on a convex shoulder at the upper part of the packing kit (6), the automatic blowout prevention mechanism consists of the packing kit (6), a sealing taper sleeve (6) and a hold-down spring (7), the lower segment of the packing kit (6)and an offset adjusting body (8) are in a screwed connection, the automatic offset adjusting mechanism consists of the offset adjusting body (8), a pressing cap (9), a sealing ring (10) and a tray (11), the offset adjusting body (8) and the packing kit (6) are in a screwed connection, the lower end is provided with a sealing tray which is compacted on the tray (11) by the pressing cap (9) and forms gasket-type seal together with the sealing ring (10).
Description
Technical field
The utility model relates to a kind of well head sealing system that is used for sucker rod pumping, and particularly a kind of automatic blowout prevention polished rod sealer is specially adapted to might take place in the sucker rod pumping well head of packing spray leakage.
Background technology
Be in the initial stage of development oil field, often because the geologic structure complexity, the bottom pressure instability, or annotate and adopt reasons such as unbalance, cause some block formation pressure to raise, cause wellhead polish rod sealer packing thorn bad, the gas blowout accident of randomness takes place, as system in Tahe Oilfield two factories of recovering the oil the gas blowout accident at night having taken place repeatedly, has caused heavy losses.The polished rod sealer that uses is made up of two-stage sealing and spherical tuningout head at present, and primary seal is the main sealing in the ordinary production, and the sealing when secondary seal is used to change packing does not seal during ordinary production.This polished rod sealer is under the situation that bottom pressure uprises, if blowout will take place for packing wearing and tearing or thrust deficiency.And the heel and toe wear of packing is mainly caused by eccentric wear.
Summary of the invention
The purpose of this utility model is to provide a kind of polished rod sealer of blowout prevention automatically, can seal well head when owing to the sealed packing wearing and tearing blowout taking place under the situation that strata pressure uprises, and the expansion of prevention accident reserves time enough for the processing of accident; And supporting design automatically deviation-adjusting device prevents the eccentric wear of packing as much as possible; Design quick and easy loading and unloading packing unit, improve the condition of work of packing as much as possible, prolong the application life of packing, reduce the probability that blowout takes place.
Technical solution of the present utility model is: the secondary seal packing of former polished rod sealer is transformed into the sealing tapered sleeve, and by spring-loaded, its appearance is the conical surface, cooperates with the inner conical surface of packing box; The inboard is a cylindrical hole, during work and the polished rod matched in clearance; Big end is Y type seal lip structure.In the normal oil pumping, if primary seal is good, downforce equates on the sealing tapered sleeve, does not seal; Badly damaged and produce spray when leaking when primary seal, the sealing tapered sleeve produces very big pressure reduction up and down, moves on the effect lower seal tapered sleeve of pressure reduction, tightens up, and realizes sealing.In order to prevent the eccentric wear of packing_seal, in two-stage sealing lower end design automatic deflection adjusting mechanism is arranged, when polished rod and well head off-centre, guarantee that sealed packing is concentric with polished rod.The primary seal stuffing box adopts the cone-shaped inner surface structure, selects Screw disk-seal tube for use, is equipped with special-purpose quick mounting mechanism, makes the mounting or dismounting packing efficient and convenient, and packing is not had injury, regular shape when compressing, and wearing and tearing are evenly.
The beneficial effects of the utility model are can avoid effectively because the blowout that polished rod seal packing fault causes; Can automatic deflection adjusting in allowed band, operation is simple and reliable; The mounting or dismounting packing is efficient and convenient, and packing is not had injury, and the packing wearing and tearing are even, and the life-span is long.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further elaborated.
Accompanying drawing is that the utility model partly cuts open overall construction drawing.
Among the figure: 1-spiral guide pin bushing; The 2-handle; The 3-back bracket; The 4-Screw disk-seal tube; 5-seals tapered sleeve; The 6-packing box; The 7-spring; 8-tuningout body; The 9-clamping nut; The 10-sealing ring; The 11-pallet; 12-packing sheath.
The specific embodiment
The utility model is from top to bottom by quick mounting or dismounting packing mechanism, anti-spraying mechanism and automatic deflection adjusting mechanism are linked in sequence and form automatically.
The quick packing mechanism that installs and removes is made up of spiral guide pin bushing (1), handle (2), back bracket (3) and packing box (6); Spiral guide pin bushing (1) endoporus top is processed with the left-handed helical guide groove that adapts with Screw disk-seal tube (4), and the bottom is processed with internal thread and is threaded with back bracket (3), makes on the two convex shoulder that is stuck in packing box (6) upper end, and axial displacement is limited by convex shoulder; Handle (2) is threaded with spiral guide pin bushing (1), replaces large-scale spanner to rotate spiral guide pin bushing (1) with it; During the new clothes packing, earlier Screw disk-seal tube (4) is enclosed within on the polished rod, left-handed packing, enter spiral guide pin bushing (1) certain-length after, right hand helix guide pin bushing (1) just can be poured Screw disk-seal tube into compacting; During the dismounting packing, can drag the exposed junction of tight packing, left-handed spiral guide pin bushing can all take out packing.
Automatically anti-spraying mechanism mainly is made up of packing box (6), sealing tapered sleeve (5) and holddown spring (7); It is the back taper hole that packing box (6) is gone up intersegmental part, in order to hold Screw disk-seal tube (4); The stage casing intersegmental part is positive taper hole, in order to hold sealing tapered sleeve (5); Hypomere is threaded with tuningout body (8); The appearance of sealing tapered sleeve (5) is the conical surface, cooperates with the inner conical surface of packing box (6); In is cylindrical hole, during work and the polished rod matched in clearance; Big end is Y type seal lip structure, to form initial sealing pressure; Whole tapered sleeve is compressed by spring (7); In the normal oil pumping, if primary seal is good, sealing tapered sleeve (5) is gone up downforce and is equated, does not seal; Badly damaged and produce spray when leaking when primary seal, sealing tapered sleeve (5) produces very big pressure reduction up and down, moves on the effect lower seal tapered sleeve (5) of pressure reduction, tightens up, and realizes sealing.
Automatic deflection adjusting mechanism is made up of tuningout body (8), pressure cap (9), sealing ring (10) and pallet (11); Tuningout body (8) top is spring base, and is threaded with packing box (6); The lower end is a seal disc, is pressed on the pallet (11) by clamping nut (9), constitutes static seal with sealing ring (10).Under clamping nut (9) and pallet (11) state that pine is connected, with whole polished rod sealer installation, try to take out 2～3 dash after, just finished automatic deflection adjusting; Screw clamping nut (9) and just can enter ordinary production.
For the Screw disk-seal tube that makes reservation preserves from when other operations, at a packing sheath of upper end suit (12).
Claims (3)
1. automatic blowout prevention polished rod sealer, from top to bottom by quick mounting or dismounting packing mechanism, anti-spraying mechanism and automatic deflection adjusting mechanism are linked in sequence and form automatically, it is characterized in that: the sealing mechanism of forming quick mounting or dismounting packing by spiral guide pin bushing (1), back bracket (3) and packing box (6), spiral guide pin bushing (1) is threaded with back bracket (3), makes on the two convex shoulder that is stuck in packing box (6) upper end; Form automatically anti-spraying mechanism by packing box (6), sealing tapered sleeve (5) and holddown spring (7), it is the back taper hole that packing box (6) is gone up intersegmental part, and in order to hold Screw disk-seal tube (4), the stage casing intersegmental part is positive taper hole, in order to hold sealing tapered sleeve (5), hypomere is threaded with tuningout body (8); Form automatic deflection adjusting mechanism by tuningout body (8), pressure cap (9), sealing ring (10) and pallet (11); Tuningout body (8) is threaded with packing box (6); The lower end is a seal disc, is pressed on the pallet (11) by clamping nut (9), constitutes static seal with sealing ring (10).
2. automatic blowout prevention polished rod sealer according to claim 1 is characterized in that spiral guide pin bushing (1) endoporus top is processed with the left-handed helical guide groove that adapts with Screw disk-seal tube (4).
3. automatic blowout prevention polished rod sealer according to claim 1, the appearance that it is characterized in that sealing tapered sleeve (5) is the conical surface, cooperates with the inner conical surface of packing box (6); In is cylindrical hole, during work and the polished rod matched in clearance; Big end is Y type seal lip structure, to form initial sealing pressure; Whole tapered sleeve is compressed by spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200307705U CN201517386U (en) | 2009-07-27 | 2009-07-27 | Automatic blowout-prevention polished rod sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200307705U CN201517386U (en) | 2009-07-27 | 2009-07-27 | Automatic blowout-prevention polished rod sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201517386U true CN201517386U (en) | 2010-06-30 |
Family
ID=42498108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200307705U Expired - Fee Related CN201517386U (en) | 2009-07-27 | 2009-07-27 | Automatic blowout-prevention polished rod sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201517386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836102A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Polished rod blowout preventer |
-
2009
- 2009-07-27 CN CN2009200307705U patent/CN201517386U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836102A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Polished rod blowout preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |