CN105179815A - Gas-injection and water-drainage sealing mechanism under pulling state - Google Patents
Gas-injection and water-drainage sealing mechanism under pulling state Download PDFInfo
- Publication number
- CN105179815A CN105179815A CN201510576648.8A CN201510576648A CN105179815A CN 105179815 A CN105179815 A CN 105179815A CN 201510576648 A CN201510576648 A CN 201510576648A CN 105179815 A CN105179815 A CN 105179815A
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- CN
- China
- Prior art keywords
- sealing
- wire rope
- hermetically sealed
- tractive
- sealed case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
Abstract
The invention discloses a gas-injection and water-drainage sealing mechanism under a pulling state. The gas-injection and water-drainage sealing mechanism comprises a packing pressure cover, a sealing outer sleeve, a pulling steel wire rope and a pressing bolt, wherein the sealing outer sleeve is welded on the upper end part of a vertical tube; the packing pressure cover is fixed on the upper part of the sealing outer sleeve by virtue of the pressing bolt; the pulling steel wire rope penetrates through the packing pressure cover and the sealing outer sleeve and then extends to the bottom end of the vertical tube; a space among the packing pressure cover, the sealing outer sleeve and the pulling steel wire rope is filled with a sealing material; the sealing material is divided into upper two layers and lower two layers of PTFE (polytetrafluoroethylene) or graphite-soaked PTFE sealing packing; more than five layers of micro-leakage graphite packing rings are arranged between the upper two layers and lower two layers; and a gas injection hole is further formed in the sealing outer sleeve. The gas-injection and water-drainage sealing mechanism has the beneficial effects that: sealing performance is guaranteed while a tube head of a flat tube section of the steel wire rope is in on position and is in butt joint with the vertical tube; gas-injection and water-drainage of the vertical tube are realized; the problem that seawater flows in and is not easy to drain due to the fact that a conventional flat tube section is in butt join with the vertical tube is solved, and therefore, the seawater corrosion problem is avoided.
Description
Technical field
The present invention relates to Offshore Engineering riser bottom and flexible pipe docking technique field, particularly relate to gas injection draining sealing mechanism under a kind of tractive state.
Background technique
Submarine pipeline refers to the pipeline playing medium translocation between Offshore Units and between Offshore Units and land terminal.Standpipe is the important component part of submarine pipeline, it connects pipeline on submarine pipeline and ocean engineering structure between manufacturing mechanism or flexible hose, standpipe is generally installed on existing platform jacket in advance, and blind plate is housed for stoping seawater intrusion riser interiors generation seawater corrosion at bottom of vertical, first the blind plate removing bottom of vertical is needed when conventional riser is connected with seabed flat tube section, the flat tube section tube head docking in place be connected with bottom of vertical is made by wire rope tractive, in the process because bottom of vertical blind plate removed by needs, inevitable seawater will pour in riser interiors, after docking, seawater is not easily discharged, riser interiors is caused to corrode.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides gas injection draining sealing mechanism under a kind of tractive state, when standpipe can be stoped to dock with seabed flat tube section, seawater invades, and avoids riser interiors seawater corrosion.
The technical solution adopted in the present invention is: gas injection draining sealing mechanism under a kind of tractive state, comprise Gland, hermetically sealed case, tractive wire rope and hold-down bolt, described hermetically sealed case is welded on the upper end portion of standpipe, Gland is fixed on the top of hermetically sealed case by hold-down bolt, to the bottom of standpipe after described tractive steel wire penetrating Gland and hermetically sealed case, Gland, hermetically sealed case, sealing material is filled with in space between tractive wire rope, it is respectively the PTFE sealed packing that two-layer PTFE or graphite soak up and down that described sealing material is divided into, centre is more than 5 layers micro-leakage graphite padding rings, described hermetically sealed case is also provided with injecting hole.
As a preferred technical solution of the present invention, described hold-down bolt is at least two, and on each hold-down bolt all pad be provided with 4 disc springs.
As a preferred technical solution of the present invention, described Gland outer wall and hermetically sealed case inwall gap are at below 0.5mm, and the gap of Gland inside and tractive wire rope is at below 1mm.
As a preferred technical solution of the present invention, the sealing surface surface roughness of described hermetically sealed case is below 6.4.
As a preferred technical solution of the present invention, the sealing position of described tractive wire rope is crossed and is moulded, and cross and mould thickness at more than 2mm, thickness is even.
Compared with prior art, the invention has the beneficial effects as follows: can realize by ensureing sealing while the docking in place of wire rope flat tube section tube head, achieve the gas injection draining of standpipe, solve traditional flat tube section to dock seawater with standpipe and pour in and a difficult problem for not easily draining, avoid the therefore seawater corrosion problem caused.
Accompanying drawing explanation
In order to be illustrated more clearly in technological scheme of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is overall structure schematic diagram of the present invention.
In figure: 1, Gland, 2, hermetically sealed case, 3, tractive wire rope, 4, hold-down bolt, 5, sealed packing, 6, micro-leakage graphite padding ring, 7, injecting hole, 8, disc spring, 9, standpipe.
Embodiment
In order to more clearly understand technological scheme of the present invention, below in conjunction with accompanying drawing, the present invention is further described.
Embodiment one
As shown in Figure 1, gas injection draining sealing mechanism under a kind of tractive state described in the present embodiment, comprise Gland 1, hermetically sealed case 2, tractive wire rope 3 and hold-down bolt 4, described hermetically sealed case 2 is welded on the upper end portion of standpipe 9, Gland 1 is fixed on the top of hermetically sealed case 2 by hold-down bolt 4, described tractive wire rope 3 is through the bottom to standpipe 9 after Gland 1 and hermetically sealed case 2, Gland 1, hermetically sealed case 2, sealing material is filled with in space between tractive wire rope 3, it is respectively the PTFE sealed packing 5 that two-layer PTFE or graphite soak up and down that described sealing material is divided into, centre is more than 5 layers micro-leakage graphite padding rings 6, described hermetically sealed case 2 is also provided with injecting hole 7, for to gas injection draining in standpipe.
Wherein, in the present embodiment, described hold-down bolt 4 is at least two, and on each hold-down bolt 4 all pad be provided with 4 disc springs 8, for compensating the irregular leakage caused of tractive wire rope 3.
Wherein, in the present embodiment, described Gland 1 outer wall and hermetically sealed case 2 inwall gap are at below 0.5mm, and the gap of Gland 1 inside and tractive wire rope 3 is at below 1mm.
Wherein, in the present embodiment, the sealing surface surface roughness of described hermetically sealed case 2 is below 6.4.
Wherein, in the present embodiment, the sealing position of described tractive wire rope 3 is crossed and is moulded, and cross and mould thickness at more than 2mm, thickness is even.
During use, before standpipe is connected with seabed flat tube section, in advance hermetically sealed case 2 is welded on the tube head of standpipe 9 upper end, the plastic steel wire rope of crossing being used for tractive is passed Gland 1 successively in advance, hermetically sealed case 2 and standpipe, and transfer to standpipe 9, tractive wire rope 3 and flat tube section tube head link up with that to carry out tractive in place, meanwhile fill in stuffing box packing to hermetically sealed case 2 and begin through the injecting hole 7 of hermetically sealed case 1 to standpipe 9 gas injection draining with after Gland 1 compression, until the inner seawater of standpipe 9 is all discharged, gas injection is stopped after bottom of vertical to dock with flat tube section tube head and seals.
Set forth a lot of detail in description above so that fully understand the present invention, but the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as limiting the scope of the invention.
In a word; those skilled in the art although the present invention illustrates above-mentioned preferred implementation, should illustrate, although can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (5)
1. gas injection draining sealing mechanism under a tractive state, it is characterized in that: comprise Gland (1), hermetically sealed case (2), tractive wire rope (3) and hold-down bolt (4), described hermetically sealed case (2) is welded on the upper end portion of standpipe (9), Gland (1) is fixed on the top of hermetically sealed case (2) by hold-down bolt (4), described tractive wire rope (3) is through the bottom to standpipe (9) after Gland (1) and hermetically sealed case (2), Gland (1), hermetically sealed case (2), sealing material is filled with in space between tractive wire rope (3), it is respectively the PTFE sealed packing (5) that two-layer PTFE or graphite soak up and down that described sealing material is divided into, centre is more than 5 layers micro-leakage graphite padding rings (6), described hermetically sealed case (2) is also provided with injecting hole (7).
2. gas injection draining sealing mechanism under a kind of tractive state according to claim 1, is characterized in that: described hold-down bolt (4) is at least two, and on each hold-down bolt (4) all pad be provided with 4 disc springs (8).
3. gas injection draining sealing mechanism under a kind of tractive state according to claim 1, it is characterized in that: described Gland (1) outer wall and hermetically sealed case (2) inwall gap are at below 0.5mm, and the gap of Gland (1) inside and tractive wire rope (3) is at below 1mm.
4. gas injection draining sealing mechanism under a kind of tractive state according to claim 1, is characterized in that: the sealing surface surface roughness of described hermetically sealed case (2) is below 6.4.
5. gas injection draining sealing mechanism under a kind of tractive state according to claim 1, is characterized in that: the sealing position of described tractive wire rope (3) is crossed and moulded, and cross and mould thickness at more than 2mm, thickness is even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576648.8A CN105179815B (en) | 2015-09-11 | 2015-09-11 | Gas injection draining sealing mechanism under a kind of drawing state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576648.8A CN105179815B (en) | 2015-09-11 | 2015-09-11 | Gas injection draining sealing mechanism under a kind of drawing state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179815A true CN105179815A (en) | 2015-12-23 |
| CN105179815B CN105179815B (en) | 2017-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510576648.8A Active CN105179815B (en) | 2015-09-11 | 2015-09-11 | Gas injection draining sealing mechanism under a kind of drawing state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179815B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019019271A1 (en) * | 2017-07-28 | 2019-01-31 | 广船国际有限公司 | Pass-through part for hydraulic control pipe of remote control valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257337B1 (en) * | 1998-03-17 | 2001-07-10 | Granville Louis Wells | Submerged riser tensioner |
| CN201318133Y (en) * | 2008-12-10 | 2009-09-30 | 抚州市临川白勇海洋工程有限公司 | Flexible joint for offshore drilling standpipe |
| CN201588935U (en) * | 2010-02-03 | 2010-09-22 | 宝鸡石油机械有限责任公司 | Sealing device for expansion joint of offshore drilling riser |
| CN101881148A (en) * | 2010-06-29 | 2010-11-10 | 中国海洋石油总公司 | Jacket riser mounting method and special riser component thereof |
| CN102155181A (en) * | 2011-03-28 | 2011-08-17 | 中国海洋石油总公司 | Wellhead tieback connector |
-
2015
- 2015-09-11 CN CN201510576648.8A patent/CN105179815B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6257337B1 (en) * | 1998-03-17 | 2001-07-10 | Granville Louis Wells | Submerged riser tensioner |
| CN201318133Y (en) * | 2008-12-10 | 2009-09-30 | 抚州市临川白勇海洋工程有限公司 | Flexible joint for offshore drilling standpipe |
| CN201588935U (en) * | 2010-02-03 | 2010-09-22 | 宝鸡石油机械有限责任公司 | Sealing device for expansion joint of offshore drilling riser |
| CN101881148A (en) * | 2010-06-29 | 2010-11-10 | 中国海洋石油总公司 | Jacket riser mounting method and special riser component thereof |
| CN102155181A (en) * | 2011-03-28 | 2011-08-17 | 中国海洋石油总公司 | Wellhead tieback connector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019019271A1 (en) * | 2017-07-28 | 2019-01-31 | 广船国际有限公司 | Pass-through part for hydraulic control pipe of remote control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105179815B (en) | 2017-06-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited Zhanjiang Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100000 China oil tower, 25 Chaoyangmen North Street, Chaoyang District, Beijing Co-patentee before: CNOOC (China) Limited Zhanjiang Branch Patentee before: China National Offshore Oil Corporation |
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| CP03 | Change of name, title or address |