CN203891811U - Hanger with primary double-conical-surface metal sealing function and secondary double-conical-surface metal sealing function - Google Patents
Hanger with primary double-conical-surface metal sealing function and secondary double-conical-surface metal sealing function Download PDFInfo
- Publication number
- CN203891811U CN203891811U CN201420259971.3U CN201420259971U CN203891811U CN 203891811 U CN203891811 U CN 203891811U CN 201420259971 U CN201420259971 U CN 201420259971U CN 203891811 U CN203891811 U CN 203891811U
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- Prior art keywords
- conical
- hanger
- double
- metal sealing
- ring
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 239000002184 metal Substances 0.000 title claims abstract description 29
- 241001347978 Major minor Species 0.000 claims description 7
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a hanger with a primary double-conical-surface metal sealing function and a secondary double-conical-surface metal sealing function. The hanger comprises a hanger body, wherein convex shoulders are respectively arranged at two ends of the hanger body; a main supporting ring B, a main sealing ring, a main supporting ring A and a main cap are sequentially arranged on the lower surface of the convex shoulder at the lower end of the hanger body downwards; a self-setting screw is arranged on the main cap, so that an inner double-conical-surface metal sealing function is fulfilled; an O-shaped main sealing ring is arranged on an excircle surface of the convex shoulder at the lower end of the hanger body; an adjusting gasket is arranged on the upper surface of the convex shoulder at the upper end of the hanger body; an upper surface of the adjusting gasket is sequentially provided with a secondary supporting ring B, a secondary sealing ring, a secondary supporting ring A and a secondary cap upwards; the secondary cap is provided with a setting screw in the radial direction, so that an outer double-conical-surface metal sealing function is fulfilled; and an O-shaped secondary sealing ring is arranged on an excircle surface of the convex shoulder at the upper end of the hanger body. Double-security sealing is performed on the hanger; and the hanger is reasonable in design, reliable in performance, convenient to detach and lasting in sealing.
Description
Technical field
The utility model belongs to petroleum machinery technical field, relates to a kind of major-minor Double-conical-surface metal sealing hanger.
Background technology
Oil, casing hanger are arranged in oil, casing head, be threaded connection oil, sleeve pipe and hang oil, casing string, its primary seal forms an airtight annular space with oil, the secondary sealing of sleeve pipe, flange gasket ring, by the pressure testing hole on wellhead assembly, detect the sealing performance of primary seal, secondary sealing and flange gasket ring, most important to ensureing wellhead assembly safe handling.
The crucial seal member of current the most frequently used hanger is single conical surface seal ring or rectangular rubber joint ring.1) single conical surface seal ring structure is that metal sealing assembly is tapering with oil, casing head contact surface, and metal sealing assembly contacts as facing directly with hanger body, the shortcoming of this structure is: metal sealing effect can not reach expection, when metal sealing is dismantled after using at the scene simultaneously, is difficult for taking off.2) rectangular rubber seal ring structure is, is rectangular rubber between hanger and oil, casing head, and the shortcoming of this structure is: the easy scratch of rectangular rubber, application life are short, simultaneously easily aging under corrosive environment and under HTHP.
Utility model content
The purpose of this utility model is to provide a kind of major-minor Double-conical-surface metal sealing hanger, has solved in prior art seal ring structure design unreasonable, rubber seal easily aging, the life-span is short, the problem that impact is used.
The technical scheme that the utility model adopts is, a kind of major-minor Double-conical-surface metal sealing hanger, comprises a hanger body, at hanger body two ends, is respectively arranged with convex shoulder,
The convex shoulder soffit of lower end is provided with main Supporting ring B, main seal ring, main Supporting ring A, master cap downwards successively, and main and cap is provided with the screw of own tightening, is called together interior Double-conical-surface metal sealing, and the convex shoulder outer round surface of lower end is provided with O type primary seal circle;
The convex shoulder upper surface of upper end is provided with adjusting pad, regulate pad upper surface that secondary Supporting ring B, secondary joint ring, secondary Supporting ring A, secondary and cap are upwards installed successively, secondary and cap is radially provided with holding screw, be called together outer Double-conical-surface metal sealing, the convex shoulder outer round surface of upper end is provided with O type secondary seal ring.
Major-minor Double-conical-surface metal sealing hanger of the present utility model, its feature is also:
The cross sectional shape of secondary joint ring and main seal ring is " X " or " H " shape.
The beneficial effects of the utility model are that Double-conical-surface metal sealing hanger not only has easy accessibility, seals the necessary features such as reliable, and rational in infrastructure, stressed even; Inside and outside two synchronous conical surface pairs participate in work simultaneously, and under the close condition of physical dimension, sealing ring deformation amount increases nearly 1 times, and sealing performance is obviously improved, and have improved hanger seat and have hung reliability and economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device.
In figure, 1. holding screw, 2. secondary and cap, 3. secondary Supporting ring A, 4. secondary joint ring, 5. secondary Supporting ring B, 6.O type secondary seal ring, 7.O type primary seal circle, 8. main and cap, 9. main Supporting ring A, 10. main seal ring, 11. main Supporting ring B, 12. hanger bodies, 13. regulate pads.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
With reference to Fig. 1, structure of the present utility model is, comprises a hanger body 12, at hanger body 12 two ends, is respectively arranged with convex shoulder,
The convex shoulder soffit of lower end is provided with main Supporting ring B11, main seal ring 10, main Supporting ring A9, master cap 8 downwards successively, main and cap 8 is provided with the screw of own tightening, be called together interior Double-conical-surface metal sealing, the convex shoulder outer round surface of lower end is provided with O type primary seal circle 7;
The convex shoulder upper surface of upper end is provided with and regulates pad 13, regulate pad 13 upper surfaces that secondary Supporting ring B5, secondary joint ring 4, secondary Supporting ring A3, secondary and cap 2 are upwards installed successively, secondary and cap 2 is radially provided with holding screw 1, be called together outer Double-conical-surface metal sealing, the convex shoulder outer round surface of upper end is provided with O type secondary seal ring 6.
The cross sectional shape of secondary joint ring 4 and main seal ring 10 is " X " or " H " shape.
Operating principle of the present utility model is,
Its major and minor sealing is comprised of two O-ring seals (6,7) and inside and outside Double-conical-surface metal sealing respectively, rely on oil, sleeve pipe deadweight, thereby utilize two Supporting ring A (3,9) to coordinate with two Supporting ring B (5,11), force extruding two joint rings (4,10), after two joint rings (4,10) distortion, open the final effect that realizes sealing.Two ends and cap (2,8) can avoid assembling axle formula casing hanger time, the problem that metal sealing assembly comes off or gets stuck; Regulating pad 13 is the present situations of hanging according to the actual seat of primary seal, by calculating secondary sealing distortion decrement, the final adjusting height of establishing.
Inside and outside two synchronous conical surface pairs participate in work simultaneously, and under the close condition of physical dimension, two joint rings (4,10) deflection increases nearly 1 times, and sealing performance is obviously improved, and have improved hanger seat and have hung reliability and economy.Two O-ring seals (6,7) and Double-conical-surface metal sealing composite construction belong to Double-insurance sealing, and design more rationally, more reliable performance, dismounting is more convenient, sealing is more lasting.
In operation, first hanger body and main metal sealing assembly seat are hung in oil, casing head, rely on oil, sleeve pipe deadweight, push and excite joint ring to reach reality and be worth most, measure again hanger body and expose actual height between end face and oil casing head body end face, then will regulate pad (Practical Calculation height) and secondary metal sealing assembly to be arranged on hanger body, finally upper level oil, casing head are arranged on this grade of oil casing head body, final hanger primary seal forms an airtight annular space with secondary sealing, flange gasket ring.
Claims (2)
1. a major-minor Double-conical-surface metal sealing hanger, is characterized in that: comprises a hanger body (12), at hanger body (12) two ends, is respectively arranged with convex shoulder,
The convex shoulder soffit of lower end is provided with main Supporting ring B (11), main seal ring (10), main Supporting ring A (9), main and cap (8) downwards successively, main and cap (8) is provided with the screw of own tightening, be called together interior Double-conical-surface metal sealing, the convex shoulder outer round surface of lower end is provided with O type primary seal circle (7);
The convex shoulder upper surface of upper end is provided with and regulates pad (13), regulate pad (13) upper surface that secondary Supporting ring B (5), secondary joint ring (4), secondary Supporting ring A (3), secondary and cap (2) are upwards installed successively, secondary and cap (2) is radially provided with holding screw (1), be called together outer Double-conical-surface metal sealing, the convex shoulder outer round surface of upper end is provided with O type secondary seal ring (6).
2. major-minor Double-conical-surface metal sealing hanger according to claim 1, is characterized in that: described secondary joint ring (4) and the cross sectional shape of main seal ring (10) are " X " or " H " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259971.3U CN203891811U (en) | 2014-05-20 | 2014-05-20 | Hanger with primary double-conical-surface metal sealing function and secondary double-conical-surface metal sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259971.3U CN203891811U (en) | 2014-05-20 | 2014-05-20 | Hanger with primary double-conical-surface metal sealing function and secondary double-conical-surface metal sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891811U true CN203891811U (en) | 2014-10-22 |
Family
ID=51718227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420259971.3U Expired - Lifetime CN203891811U (en) | 2014-05-20 | 2014-05-20 | Hanger with primary double-conical-surface metal sealing function and secondary double-conical-surface metal sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162661A (en) * | 2018-10-29 | 2019-01-08 | 四川宝石机械钻采设备有限责任公司 | A kind of multi-functional mandrel type hanger |
-
2014
- 2014-05-20 CN CN201420259971.3U patent/CN203891811U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162661A (en) * | 2018-10-29 | 2019-01-08 | 四川宝石机械钻采设备有限责任公司 | A kind of multi-functional mandrel type hanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |