CN202612926U - Anti-falling wellhead thermal expansion compensator - Google Patents
Anti-falling wellhead thermal expansion compensator Download PDFInfo
- Publication number
- CN202612926U CN202612926U CN 201220285092 CN201220285092U CN202612926U CN 202612926 U CN202612926 U CN 202612926U CN 201220285092 CN201220285092 CN 201220285092 CN 201220285092 U CN201220285092 U CN 201220285092U CN 202612926 U CN202612926 U CN 202612926U
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- China
- Prior art keywords
- connecting sleeve
- expansion compensator
- well head
- axle
- falling
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Abstract
An anti-falling wellhead thermal expansion compensator comprises a movable rocker pipe, a connecting sleeve, graphite pads, a compression nut, a movable connecting shaft, a square elbow and a hooping head, wherein the movable connecting shaft is designed into a round pipe shape, a ring boss is arranged on the movable connecting shaft, the connecting sleeve is sleeved outside the movable connecting shaft, an upper graphite pad and a lower graphite pad are respectively arranged between the periphery of the upper part of the ring boss and the inner wall of the connecting sleeve as well as between the periphery of the lower part of the ring boss and the inner wall of the connecting sleeve, the compression nut is arranged at the lower part of the connecting sleeve, a thrust washer is arranged between the upper end of the compression nut and the lower graphite pad, the lower end of the movable connecting shaft is welded with the square elbow, the other end of the square elbow is welded with the hooping head horizontally, the upper end of the connecting sleeve is horizontally welded with the rocker pipe, the other end of the rocker pipe is connected with 1-2 anti-falling wellhead thermal expansion compensators in series or is directly connected with a gas injection valve or an oil discharge valve of a wellhead, or each anti-falling wellhead thermal expansion compensator is connected to a gas injection pipeline or an oil discharge pipeline in series, the pipeline expansion requirements are satisfied during the pipeline thermal stress compensation process, and the anti-falling wellhead thermal expansion compensator is temperature-resistant and pressure-resistant, and has a long service life.
Description
Technical field
The utility model relates to a kind of loose-prevention type well head heat expansion compensator, is applied in the thermal stress compensation of oil thermal recovery well head and ground high pressure, elevated-temperature seal pipeline.
Background technique
Extensively adopt the well head and the surface line compensator of high pressure, high temperature in oil-field thick-oil, the high viscosity heavy oil development; Every cover well head heat expansion compensator is made up of the 2-3 cover; When compensator is worked; Be to rotate the displacement of drive intersection rocking arm, eliminate the length change that well head and surface line cause because of temperature variation by flexibly connecting axle.What was using in the oil field at present is the slip-type compensator, and its shortcoming or deficiency are:
1, because of the compensator structure restriction, the location slips only embeds movable axis 2mm.After a period of time work,, under 27Mpa working pressure and 350 ℃ of action of high temperature, very easily deviate to cause human injury because the effect of corrosion and alternate load was lost efficacy.
2, adopt movable axis outer surface, movable sheath endoporus and graphite pads graphite pads under the thrust of nut to be out of shape and to form and seal, because of unreasonable structure, sealing effect is poor.
3, under the effect of clamping nut axial force, the movable axis front-end face is tightly pushed down step surface in the movable sheath, makes movable axis rotate difficulty.Can't rotate because of the corrosion of movable axis end face in period doing, cause compensator to lose efficacy than the casual labourer.
4, because of movable axis and location slips requirement on machining accuracy height, and cause manufacture cost high, labor strength is big, deficiency in economic performance.
Summary of the invention
The purpose of the utility model provides a kind of loose-prevention type well head heat expansion compensator, overcomes the defective that prior art exists.
The technological scheme of the utility model realizes in the following manner:
A kind of loose-prevention type well head heat expansion compensator; Comprise movable rocking arm pipe, connecting sleeve, graphite pads, clamping nut, flexible connection axle, elbow bend and clip head; Flexibly connect axle and be made as tubular shape, the middle part is provided with annular boss, and periphery is with connecting sleeve; Between the upper periphery of annular boss and lower, outer perimeter and connecting sleeve inwall, be respectively equipped with graphite pads and following graphite pads; Be provided with the clamping nut that is threaded in the connecting sleeve bottom, between clamping nut upper end and following graphite pads, be provided with thrust washer, flexibly connect the lower end and the elbow bend welding of axle; The elbow bend the other end and the welding of clip head level; Connecting sleeve upper end and the welding of rocking arm pipe level, the rocking arm pipe the other end is connected in series 1-2 loose-prevention type well head heat expansion compensator or directly is connected with the steam injection valve door or the fuel-displaced valve of well head, or be connected on each loose-prevention type well head heat expansion compensator string on gas injection pipeline or the flow line.
Connecting sleeve is made as cylindrical, and top is provided with the horizontal hole that is connected with the rocking arm pipe, and the bottom is provided with the rotation chamber that flexibly connects axle, and the upper diameter of rotating the chamber is provided with the box thread that cooperates with clamping nut less than the lower diameter of rotating the chamber in the bottom of rotating the chamber.
The utility model compared with prior art has following advantage:
1, the utility model can prevent effectively that the axial length time service produces fatigue and corrosion causes performance failure because of flexibly connecting, and under high temperature, high-pressure situations, from compensator, deviates from, and causes human injury.
2, the utility model can be realized the connecting sleeve end face, flexibly connect the multiaspect compound seal of axle surface, anticreep step end face and connecting sleeve inner face, and good sealing effect has been avoided the various defectives of conical seal (contact) face, prevents pipeline leakage.
3, flexibly connect the axle front-end face not with the movable sheath dieback, leave bigger gap, flexibly connect axle and rotate unrestricted.
4, the existing high-lubricity of graphite material has reliable tightness again.The flexible connection axle is promptly rotatable not to be leaked again freely, and dismantles easy to maintenance, long service life.
5, because the thickness I of anti-avulsion steel loop is processed with thick-wall tube, itself and movable axis are welded into the flexible connection shaft assembly.Compare with round steel processing, cost-saved about 20%, its good toughness, intensity is high, weight is little, cost is low.
6, safe in utilization, the reliable operation of the utility model, long service life have improved the functional reliability of high temperature, the above high pressure line of 27Mpa more than 350 ℃.
Description of drawings
Accompanying drawing is the structural representation of the utility model;
Among the figure: 1-rocking arm pipe, the 2-connecting sleeve, the last graphite pads of 3-, graphite pads under the 4-, 5-thrust washer, 6-clamping nut, 7-flexibly connect axle, 8-elbow bend, 9-clip head.
Embodiment
For further disclosing the technological scheme of the utility model, elaborate through embodiment below in conjunction with Figure of description:
A kind of loose-prevention type well head heat expansion compensator; Comprise movable rocking arm pipe 1, connecting sleeve 2, graphite pads, clamping nut 6, flexibly connect axle 7, elbow bend 8 and clip head 9; It is characterized in that flexibly connecting axle and be made as tubular shape, the middle part is provided with annular boss, and periphery is with connecting sleeve; Between the upper periphery of annular boss and lower, outer perimeter and connecting sleeve inwall, be respectively equipped with graphite pads 3 and following graphite pads 4; Be provided with the clamping nut that is threaded in the connecting sleeve bottom, between clamping nut upper end and following graphite pads, be provided with thrust washer, flexibly connect the lower end and the elbow bend welding of axle; The elbow bend the other end and the welding of clip head level; Connecting sleeve upper end and the welding of rocking arm pipe level, the rocking arm pipe the other end is connected in series 1-2 loose-prevention type well head heat expansion compensator or directly is connected with the steam injection valve door or the fuel-displaced valve of well head, or be connected on each loose-prevention type well head heat expansion compensator string on gas injection pipeline or the flow line.
The thermal stress compensation device of steam injection-production well mouth generally all is that the loose-prevention type well head heat expansion compensator of one or more polyphones is formed; Clip head 9 links to each other with notes vapour or flow line; behind 1-2 loose-prevention type well head heat expansion compensator of rocking arm pipe 1 polyphone; the rocking arm pipe of last links to each other with the notes vapour or the fuel-displaced valve of well head, or is connected on each loose-prevention type well head heat expansion compensator string on gas injection pipeline or the flow line.When steam injection pipeline or flow line receive thermal stretching; Drive clip head 9, the equidirectional together rotation of elbow bend 8; Drive to flexibly connect axle 7 simultaneously and in clamping nut 6 and connecting sleeve 2, rotate, all very high at seal lubrication sealing, the temperature tolerance down of last graphite pads 3 and following graphite pads 4, flexible connection spools 7 can not be retreated under the cooperation of the annular boss of flexible connection spools 7, thrust washer and clamping nut; The spacing axle that flexibly connects down in last graphite pads 3 also heads on connecting sleeve in the not meeting; The rotation that has guaranteed to flexibly connect axle freely, this kind structure in the HTHP seal performance with to rotate flexibility very good, long service life.
Claims (2)
1. loose-prevention type well head heat expansion compensator; Comprise movable rocking arm pipe, connecting sleeve, graphite pads, clamping nut, flexible connection axle, elbow bend and clip head; It is characterized in that: flexibly connect axle and be made as tubular shape, flexibly connect axle and be provided with annular boss, periphery is with connecting sleeve; Between the upper periphery of annular boss and lower, outer perimeter and connecting sleeve inwall, be respectively equipped with graphite pads and following graphite pads; Be provided with the clamping nut that is threaded in the connecting sleeve bottom, between clamping nut upper end and following graphite pads, be provided with thrust washer, flexibly connect the lower end and the elbow bend welding of axle; The elbow bend the other end and the welding of clip head level; Connecting sleeve upper end and the welding of rocking arm pipe level, the rocking arm pipe the other end is connected in series 1-2 loose-prevention type well head heat expansion compensator or directly is connected with the steam injection valve door or the fuel-displaced valve of well head, or be connected on each loose-prevention type well head heat expansion compensator string on gas injection pipeline or the flow line.
2. loose-prevention type well head heat expansion compensator according to claim 1; It is characterized in that: connecting sleeve is made as cylindrical; Top is provided with the horizontal hole that is connected with the rocking arm pipe; The bottom is provided with the rotation chamber that flexibly connects axle, and the upper diameter of rotating the chamber is provided with the box thread that cooperates with clamping nut less than the lower diameter of rotating the chamber in the bottom of rotating the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285092 CN202612926U (en) | 2012-06-18 | 2012-06-18 | Anti-falling wellhead thermal expansion compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220285092 CN202612926U (en) | 2012-06-18 | 2012-06-18 | Anti-falling wellhead thermal expansion compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612926U true CN202612926U (en) | 2012-12-19 |
Family
ID=47346625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220285092 Expired - Fee Related CN202612926U (en) | 2012-06-18 | 2012-06-18 | Anti-falling wellhead thermal expansion compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612926U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670354A (en) * | 2014-01-06 | 2014-03-26 | 江苏万兴石油装备有限公司 | Combined injection-production compensation device |
| CN105781467A (en) * | 2014-12-23 | 2016-07-20 | 中国石油化工股份有限公司 | Water well mouth adjustment device |
| CN111927338A (en) * | 2020-07-22 | 2020-11-13 | 四川宏华石油设备有限公司 | High-pressure manifold telescopic short joint |
-
2012
- 2012-06-18 CN CN 201220285092 patent/CN202612926U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670354A (en) * | 2014-01-06 | 2014-03-26 | 江苏万兴石油装备有限公司 | Combined injection-production compensation device |
| CN105781467A (en) * | 2014-12-23 | 2016-07-20 | 中国石油化工股份有限公司 | Water well mouth adjustment device |
| CN111927338A (en) * | 2020-07-22 | 2020-11-13 | 四川宏华石油设备有限公司 | High-pressure manifold telescopic short joint |
| CN111927338B (en) * | 2020-07-22 | 2023-03-24 | 四川宏华石油设备有限公司 | High-pressure manifold telescopic short joint |
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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: 20121219 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |