CN207598212U - One kind is used for tubing hanger end metal seal nipple - Google Patents
One kind is used for tubing hanger end metal seal nipple Download PDFInfo
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- CN207598212U CN207598212U CN201721262977.6U CN201721262977U CN207598212U CN 207598212 U CN207598212 U CN 207598212U CN 201721262977 U CN201721262977 U CN 201721262977U CN 207598212 U CN207598212 U CN 207598212U
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- metal
- seal
- ring
- tubing hanger
- slot
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Abstract
The utility model discloses one kind to be used for tubing hanger end metal seal nipple, including, seal, the seal is made of seal ontology and metal sealing joint, circlip, the circlip half is inlayed in the outer end face of the seal ontology, support ring, the support ring is arranged on the outside of the metal sealing joint, metal o-ring, the metal o-ring is set in the support ring, stress discharging slot is offered at left and right sides of the metal o-ring, one of them stress discharging slot is positioned close to the side of the metal sealing joint, a pair of of deformation slot is offered at left and right sides of the metal o-ring, the utility model inner body can exchange between each other, installation does not need to specific purpose tool with dismounting, convenient for assembling, install debug time is saved, downtime is reduced to bottom line.
Description
Technical field
The utility model is related to a kind of metal sealing joints, are connect more particularly to one kind for the sealing of tubing hanger end metal
Head belongs to petroleum production processes technical field.
Background technology
In land oil field or ocean platform, for high pressure, gas and the oil recovery containing Korrosionsmedium or gas recovery well
In mouth device, for safety, needed between the end of tubing hanger and tubing head crossover flange using metal to metal seal, it should
Metal sealing is by itself ontology and special sealing device is constituted by seal carrier, in the specification field of API 6A,
Tubing head crossover flange, tubing hanger are referred to by seal carrier, the well head of oil recovery or gas production installation in, the end of tubing hanger with
It needs to seal there are one quite reliable between tubing head crossover flange.
In oil recovery or gas wellhead equipment field, the sealing of tubing hanger end metal is one indispensable important zero
Component, it not only has the ability of anti-H 2 S, carbon dioxide corrosion, but also to bear high pressure (fluid pressure or gas
Pressure) sealing ability, the requirement of API6A and NACE MR0175 specifications is also met in the selection of material, if using
In once fail, serious leakage will occur, need carry out workover treatment, so tubing hanger end metal be sealed in it is safe to use
It is upper to show extremely important.
Tubing hanger end metal sealing element currently in use is monoblock type, relatively simple for structure, from the appearance
It is a thin-walled tubular shape, in end, outer circle carries lip, and from the point of view of lip Local map, lip is in circular arc type, metal seal
It is exactly sealed using circular arc type lip, there is one to be convenient for carrying out dismounting using tool among metal seal outer circle
Circumferential groove, the presence of the circumferential groove can also improve entire metal seal non-deformability under the effect of external force, make
Tubing hanger end metal sealing part works principle with there are problems:
Matching between metal seal end lip and carrier is combined into interference fit, and interference volume is too small, metal seal lip
Although deformation at mouthful is flexible deformation, but the ability for bearing internal pressure will not be very high, interference volume is too big, at metal o-ring lip
Deformation by elastic deformation for plastic deformation, bearing the ability of internal pressure in this way will fail, so the control to interference volume
Quite important, this design determines that tubing hanger end metal sealing element maximum working pressure is 5000Psi.
The detection pressure that tubing hanger end metal sealing element currently in use is outwardly and inwardly born is different
, mainly should be metal seal is a thin-wall part, itself wall thickness by influenced by seal carrier cannot be too thick, according to
API6A requires the control of its hardness must be in the range of HB187-237, so strength of materials of metal seal itself is not very
Height, when the applied external force of metal seal is more than the yield strength of material, certain of metal seal lip will be with
It is disengaged by seal carrier, when the inside of metal seal is acted on by power, the lip of metal seal is under force
It can expand, lip by seal carrier with that can be fitted closely, and with the increase of active force, adhesive force can also increase, so internal inspection
Dynamometry is greater than external detection power.
In well head installation and debugging, by there is outwardly and inwardly institute in terms of the sealing reliability of detection metal seal
Pressure is different to be judged for detecting of bearing.Tubing hanger end metal sealing element currently in use is disposably to make
With installation needs specific purpose tool with dismounting, installation personnel is required to have very high operative skill installing, otherwise can oozed
Leakage.
Utility model content
The purpose of this utility model, which is to provide, a kind of can solve being connect for the sealing of tubing hanger end metal for problem above
Head.
To achieve the above object, the utility model provides a kind of for tubing hanger end metal seal nipple, including close
Feng Ti, the seal are made of seal ontology and metal sealing joint, circlip, and the circlip half inlays institute
In the outer end face for stating seal ontology, support ring, the support ring is arranged on the outside of the metal sealing joint, metal sealing
Circle, the metal o-ring are set in the support ring, and stress discharging slot is offered at left and right sides of the metal o-ring,
In a stress discharging slot be positioned close to the side of the metal sealing joint, at left and right sides of the metal o-ring
Offer a pair of of deformation slot.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the metal o-ring is tubular
And its section is diamond shape, the metal o-ring is sealed by diamond-shaped cross-section.
It is as described above a kind of in tubing hanger end metal seal nipple, wherein, the stress discharging slot and described
Slot symmetric points centered on the diamond-shaped cross-section center of the metal o-ring are deformed to set.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the section of the metal o-ring
Two diagonally for contact point, the contact point is contacted respectively at the seal and by seal carrier.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the deformation slot is arranged on described
The inside of stress discharging slot, the stress discharging slot and the deformation slot are that the diameter of arc groove and the stress discharging slot is small
In the diameter of the deformation slot.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the seal is close for mandrel type
Feng Ti.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the metal sealing joint is by carbon
Steel, low-alloy steel, 300 series stainless steels and corrosion-resisant alloy material are made and are seamlessly connected with the seal ontology.
One kind as described above is used in tubing hanger end metal seal nipple, wherein, the outer end of the metal o-ring
Face and the contact surface shape of the support ring have angle, and the angle is 5 ° -15 °.
The beneficial effects of the utility model are：It is this for tubing hanger end metal seal nipple when in use itself not by
The limitation of size, can be made into the metal o-ring connector of various specifications size, and sealing is not interfered in pressure oscillation
Quality；Metal sealing joint main function is to provide and keeps sealing between metal, which cannot be only used for
It in the field of API6A, may be alternatively used for other fields for needing metal to metal seal, and can be reused repeatedly and nothing
It needs to change new；Particular channel, which need not be provided, to be sealed；It is simple in structure, the mutual energy of the utility model inner body
It exchanges, installation does not need to specific purpose tool with dismounting, convenient for assembling, has saved install debug time, downtime is reduced to most
Lower bound degree.
Description of the drawings
Fig. 1 is a kind of structural representation for tubing hanger end metal seal nipple that the utility model embodiment provides
Figure；
Fig. 2 is the assembling schematic diagram of support ring；
Fig. 3 is the structure diagram of metal o-ring；
The label of each component of attached drawing is as follows：1st, seal ontology；2nd, metal o-ring；3rd, support ring；4th, circlip；5、
Metal sealing joint；6th, stress discharging slot；7th, slot is deformed；8th, contact point.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, the present embodiment is with the utility model
Implemented under premised on technical solution, it should be understood that these embodiments are merely to illustrate the utility model rather than limit this reality
With novel range.
Embodiment 1
As shown in Figure 1 to Figure 3, it is a kind of to be used for tubing hanger end metal seal nipple, including, seal, the seal
It is made of seal ontology 1 and metal sealing joint 5, the metal sealing joint 5 will not make by seal carrier strength reduction, bullet
Property baffle ring 4,4 half of circlip are inlayed in the outer end face of the seal ontology 1, and support ring 3, the support ring 3 is set
It puts in the outside of the metal sealing joint 5, metal o-ring 2, the metal o-ring 2 is set in the support ring 3, described
2 left and right sides of metal o-ring offers stress discharging slot 6, one of them described stress discharging slot 6 is positioned close to described
The side of metal sealing joint 5,2 left and right sides of metal o-ring offer a pair of of deformation slot 7, tubing hanger end metal
Sealing element and metal to metal seal is belonged to by the sealing between seal carrier inner surface, inside surface roughness requires to reach
0.4 micron.
Under the action of external force F, by the support ring 3, the metal o-ring 2 is transmitted the force to, the metal is close
Start to deform at the contact point of seal 2, by deformation, two diagonal contact points of the metal o-ring connect respectively with carrier
It touches, forms sealing, using the difference to force, make preferentially to obtain active force at contact point, that is to say, that connect under force
It is deformed first at contact；With the increase puted forth effort, the power at contact point is also increasing, and the deformation at contact point is also more next
More abundant, sealing is also more and more reliable, due to the presence of stress discharging slot and the original distribution of power, makes the metal o-ring 2
The power born of ontology and little, metal o-ring 2 described in this way would not be destroyed.
Embodiment 2
On the basis of above example, the metal o-ring 2 is diamond shape for tubular and its section, the metal sealing
Circle 2 is sealed by diamond-shaped cross-section, and the metal o-ring 2 can bear 30000Psi operating pressures at normal temperatures, described
Stress discharging slot 6 and deformation slot 7 symmetric points centered on the diamond-shaped cross-section center of the metal o-ring 2 are set, institute
State deformation slot 7 and be arranged on the inside of the stress discharging slot 6, the stress discharging slot 6 and the deformation slot 7 be arc groove and
The diameter of the stress discharging slot 6 is less than the diameter of the deformation slot 7.
Two of the section of the metal o-ring 2 are diagonally contact point, the contact point respectively at the seal and
It is contacted by seal carrier, since material hardness used in the metal o-ring 2 is harder than material used in seal carrier
Low very much, and the special construction of metal o-ring 2 is spent, so when in use, the sealing surface of seal carrier will not be destroyed.
Embodiment 3
On the basis of above example, the seal is mandrel type seal, the mandrel type seal design
Wall thickness can bear 10000Psi operating pressures, be pressed in this way in the external detection pressure of the metal sealing joint 5 and internal detection
Power is with regard to that can be consistent, and the metal sealing joint 5 is by carbon steel, low-alloy steel, 300 series stainless steels and corrosion-resisant alloy material
It is made and is seamlessly connected with the seal ontology 1, so metal sealing joint 5 can be used for more a wide range of field, especially quilt
For hydrogen sulfide, carbon dioxide corrosion working condition, the metal sealing joint 5 can be used for less than -60 DEG C low temperature and by
For 345 DEG C or more of high temperature.
The outer end face of the metal o-ring 2 and the contact surface shape of the support ring 3 have angle, and the angle is 5 °-
15 °, reached by the inconsistent of contact angle between support ring 3 and metal o-ring 2 to the preferential configuration in force.
It is this itself not limited when in use by size for tubing hanger end metal seal nipple, it can be made into various
The metal o-ring connector of specification size does not interfere with the quality of sealing in pressure oscillation；Metal sealing joint is main
Effect is to provide and keeps sealing between metal, which cannot be only used in the field of API6A, may be alternatively used for it
It needs the field of metal to metal seal, and can be reused repeatedly without more renewing；Special ditch need not be provided
Slot can be sealed；Simple in structure, the utility model inner body can exchange between each other, and installation does not need to be special with dismounting
Tool convenient for assembling, has saved install debug time, downtime is reduced to bottom line.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. one kind is used for tubing hanger end metal seal nipple, including,
Seal, the seal are made of seal ontology (1) and metal sealing joint (5),
Circlip (4), circlip (4) half are inlayed in the outer end face of the seal ontology (1),
Support ring (3), the support ring (3) are arranged on the outside of the metal sealing joint (5),
Metal o-ring (2), the metal o-ring (2) are set in the support ring (3),
It is characterized in that：Offer stress discharging slot (6) at left and right sides of the metal o-ring (2), one of them it is described should
Power discharging slot (6) is positioned close to the side of the metal sealing joint (5), open at left and right sides of the metal o-ring (2)
Equipped with a pair of deformation slot (7).
It is 2. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The metal is close
Seal (2) is diamond shape for tubular and its section, and the metal o-ring (2) is sealed by diamond-shaped cross-section.
It is 3. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The stress is let out
Slot (6) and the deformation slot (7) symmetric points centered on the diamond-shaped cross-section center of the metal o-ring (2) are put to set.
It is 4. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The metal is close
Two of the section of seal (2) are diagonally contact point, and the contact point is contacted respectively at the seal and by seal carrier.
It is 5. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The deformation slot
(7) be arranged on the inside of the stress discharging slot (6), the stress discharging slot (6) and the deformation slot (7) be arc groove and
The diameter of the stress discharging slot (6) is less than the diameter of the deformation slot (7).
It is 6. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The seal
For mandrel type seal.
It is 7. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The metal is close
Sealing joint (5) be made of carbon steel, low-alloy steel, 300 series stainless steels and corrosion-resisant alloy material and with the seal ontology
(1) it is seamlessly connected.
It is 8. according to claim 1 a kind of for tubing hanger end metal seal nipple, it is characterised in that：The metal is close
The outer end face of seal (2) and the contact surface shape of the support ring (3) have angle, and the angle is 5 ° -15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262977.6U CN207598212U (en) | 2017-09-29 | 2017-09-29 | One kind is used for tubing hanger end metal seal nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721262977.6U CN207598212U (en) | 2017-09-29 | 2017-09-29 | One kind is used for tubing hanger end metal seal nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598212U true CN207598212U (en) | 2018-07-10 |
Family
ID=62756590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721262977.6U Expired - Fee Related CN207598212U (en) | 2017-09-29 | 2017-09-29 | One kind is used for tubing hanger end metal seal nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104760A (en) * | 2017-09-29 | 2018-06-01 | 苏州优力克流体控制科技有限公司 | One kind is used for tubing hanger end metal sealing structure |
-
2017
- 2017-09-29 CN CN201721262977.6U patent/CN207598212U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104760A (en) * | 2017-09-29 | 2018-06-01 | 苏州优力克流体控制科技有限公司 | One kind is used for tubing hanger end metal sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20210929 |