CN204060588U - A kind of external multi-piston type Offshore Drilling Riser pouring valve - Google Patents
A kind of external multi-piston type Offshore Drilling Riser pouring valve Download PDFInfo
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- CN204060588U CN204060588U CN201420478798.6U CN201420478798U CN204060588U CN 204060588 U CN204060588 U CN 204060588U CN 201420478798 U CN201420478798 U CN 201420478798U CN 204060588 U CN204060588 U CN 204060588U
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Abstract
The utility model discloses a kind of external multi-piston type Offshore Drilling Riser pouring valve, comprise main pipe, the inner passage of this main pipe communicates with marine riser string inside, the barrel of main pipe circumferentially evenly has multiple circulating window, and each circulating window is circumscribed with a slide device; The structure of each slide device is, comprise a cavity be tightly connected with main pipe's outer wall, this cavity upper and lower end face is respectively arranged with through hole and lower through-hole, main piston is provided with in this cavity, the main piston body of rod is circumferentially set with Compress Spring, Compress Spring upper end withstands on cavity inner wall, and Compress Spring lower end apical grafting is at main piston piston head upper surface; During original state, main piston piston head and cavity lower through-hole compress completely.Device of the present utility model, improves the reliability of operation, overcomes the excessive and Seal Design problem brought of axial dimension, simplifies the structure, greatly reduce cost.
Description
Technical field
The utility model belongs to offshore oil drilling technical field, relates to a kind of external multi-piston type Offshore Drilling Riser pouring valve.
Background technology
Marine riser pouring valve is one of visual plant in marine drilling equipment, and be the key equipment of marine riser system support, in the process of ocean deepwater drilling, drilling engineer must consider that the ability of caving in resisted by marine riser at deep sea drilling.When inner drilling liquid pressure drops in lower than such as drilling well of may caving in during seawater pressure the situation running into region of no pressure, in this case, mud flows out from marine riser, enters leakage layer; When marine riser is promptly separated, drilling fluid may run off fast simultaneously, causes marine riser internal pressure to decline, if can not supplementary pressure in time, then marine riser just may squeezedly be ruined under the effect of external pressure seawater.The Main Function of marine riser pouring valve is can the pressure of replenish lost rapidly, balance inside and outside differential pressure, thus plays a protective role to whole riser system.
Existing marine riser pouring valve mainly adopts overall sleeve type structure, slide over marine riser inside to install, for monolithic construction, complicated integral structure is heavy, when detecting that internal pressure is lost, when causing inside and outside differential pressure to rise to a certain setting value, this slide device starts, inside and outside circulation passage is opened, and seawater enters equilibrium pressure.The deficiency of this device is, only have a slide device, security reliability is not high, and when slide device breaks down, this pouring valve will lose efficacy.
Utility model content
The purpose of this utility model is to provide a kind of external multi-piston type Offshore Drilling Riser pouring valve, solves the monolithic construction existed in prior art, the problem that its complex structure is heavy, security reliability is not high.
The technical scheme that the utility model adopts is, a kind of external multi-piston type Offshore Drilling Riser pouring valve, comprise main pipe, the inner passage of this main pipe communicates with marine riser string inside, the barrel of main pipe circumferentially evenly has multiple circulating window, and each circulating window is circumscribed with a slide device;
The structure of each slide device is, comprise a cavity be tightly connected with main pipe's outer wall, this cavity upper and lower end face is respectively arranged with through hole and lower through-hole, main piston is provided with in this cavity, the main piston body of rod is circumferentially set with Compress Spring, Compress Spring upper end withstands on cavity inner wall, and Compress Spring lower end apical grafting is at main piston piston head upper surface;
During original state, main piston piston head and cavity lower through-hole compress completely.
External multi-piston type Offshore Drilling Riser pouring valve of the present utility model, its feature is also:
On the cavity contacted with the main piston body of rod, through-hole wall is provided with upper sealing ring, and the piston head excircle of main piston is provided with lower seal.
Be respectively arranged with an auxiliary fluid cylinder at the upper-lower position of each slide device, top assists the auxiliary piston rod termination of fluid cylinder to arrange down; The auxiliary piston rod termination of the auxiliary fluid cylinder in below is arranged upward, concentric corresponding with the main piston of axis respectively.
The cylinder body bottom of each auxiliary fluid cylinder is fixed on auxiliary fluid cylinder junction plate, is fixed in gripper shoe in the middle part of cylinder body, and auxiliary fluid cylinder junction plate is fixedly connected with the excircle of main pipe with gripper shoe.
The beneficial effects of the utility model are, adopt four independently external slide devices, when marine riser inside and outside differential pressure changes time, external slide device all can be opened, and seawater is entered with equilibrium pressure.Even if advantage is that certain slide device lost efficacy, other pouring valves still can complete compulsory exercise, improve the reliability of operation.Outlet structure also has another one advantage, overcomes the excessive and Seal Design problem brought of axial dimension, simplifies the structure, greatly reduce cost.
Accompanying drawing explanation
Fig. 1 is the utility model device structural representation in off position;
Fig. 2 is the structural representation of the utility model device in open mode;
Fig. 3 is the sectional view of Fig. 1 along A-A cross section.
In figure, 1. main pipe, 2. auxiliary fluid cylinder junction plate, 3. auxiliary fluid cylinder gripper shoe, 4. auxiliary fluid cylinder, 5. auxiliary piston rod, 6. main piston, 7. go up sealing ring, 8. Compress Spring, 9. lower seal, 10. bolt, 11. circulating windows.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
With reference to Fig. 1, Fig. 2, Fig. 3, the structure of the utility model device is, comprise main pipe 1, the inner passage of this main pipe 1 communicates with marine riser string inside, the barrel of main pipe 1 circumferentially evenly has multiple circulating window 11 (embodiment is 4 circulating windows 11), and each circulating window 11 is circumscribed with a slide device;
The structure of each slide device is, comprise a cavity be tightly connected with main pipe 1 outer wall, this cavity upper and lower end face is respectively arranged with through hole and lower through-hole, main piston 6 is provided with in this cavity, main piston 6 body of rod is circumferentially set with Compress Spring 8, Compress Spring 8 upper end withstands on cavity inner wall, Compress Spring 8 lower end apical grafting is at main piston 6 piston head upper surface, on the cavity contacted with main piston 6 body of rod, through-hole wall is provided with upper sealing ring 7, the piston head excircle of main piston 6 is provided with lower seal 9, for sealing main piston 6 and cavity inner wall, the flowing of outer fluid in closing, during original state, main piston 6 relies on the tension force of Compress Spring 8 to be in lowermost position to put, and main piston 6 piston head and cavity lower through-hole compress completely, and cavity lower through-hole is blocked by main piston 6 piston head completely,
(embodiment is four slide devices to be altogether respectively arranged with an auxiliary fluid cylinder 4 at the upper-lower position of each slide device, correspondence is provided with eight auxiliary fluid cylinders 4 altogether), the cylinder body bottom of each auxiliary fluid cylinder 4 is fixed on auxiliary fluid cylinder junction plate 2 by bolt 10, be fixed in gripper shoe 3 in the middle part of cylinder body, auxiliary fluid cylinder junction plate 2 is fixedly connected with the excircle of gripper shoe 3 with main pipe 1, and four groups, top assists auxiliary piston rod 5 termination of fluid cylinder 4 to arrange down; Four groups, below assists auxiliary piston rod 5 termination of fluid cylinder 4 to arrange upward, concentric corresponding with the main piston 6 of axis respectively; The auxiliary piston rod 5 of top also can carry out spacing to main piston 6 stroke upwards simultaneously, and when avoiding main piston 6 to move up, Compress Spring 8 compresses excessively destroyed.
Pouring valve of the present utility model is arranged on marine riser pipe nipple termination, joins end to end connect with riser joints, and form the marine riser string between drillship to subsea blowout preventer, operating principle is:
As Fig. 1, when marine riser internal pressure balances time, main piston 6 to seal with cavity respectively by upper sealing ring 7 and lower seal 9 and contacts, and now cavity lower through-hole blocks by the piston head of main piston 6 completely, slide device blocks the external circulation passage of circulating window 11, and interior outer fluid can not flow.
As Fig. 2, when the inner lose returns of marine riser, time pressure reduces, when inside and outside differential pressure reaches Compress Spring 8 a certain setting value, each main piston 6 piston head lower surface is subject to seawater pressure, the tension force that four main pistons 6 overcome Compress Spring 8 starts to move upward, and main piston 6 piston head leaves cavity lower through-hole, and circulation passage is opened through, seawater enters marine riser inside, to balance inside and outside differential pressure by four circulating windows 11.When external and internal pressure reaches equilibrium state again, main piston 6, under the effect of Compress Spring 8 restoring force, moves downward until cavity lower through-hole blocks by main piston 6 piston head completely, and circulating window 11 and sea water passage are closed, and recover structural behavior as shown in Figure 1.
The Main Function of auxiliary fluid cylinder 4 plays auxiliary emergencing action, can each auxiliary fluid cylinder 4 of Long-distance Control, when the inner lose returns of marine riser or ejection escape time, when some or several main piston 6 motion failures, namely can not move upward when opening cavity lower through-hole, auxiliary fluid cylinder 4 below this fault main piston 6 position is under the effect of hydraulic pressure, and auxiliary piston rod 5 moves upward, and promotes main piston 6 and moves upward; Otherwise inside and outside marine riser when fluid pressure balance, when some or several main piston 6 can not move downward and block cavity lower through-hole, the auxiliary piston rod 5 of the auxiliary fluid cylinder 4 above this fault main piston 6 moves downward, and forces main piston 6 normal reset.
The structure design of this slide device ensures inside and outside fluid matasomatism area equation, therefore can the pressure of internal outer fluid differentiate, when external seawater pressure is greater than internal fluid pressure to a certain setting value, main piston 6 moves upward and opens fluid through channel, seawater enters pouring valve and compensates pressure, and when pressure balance, main piston 6 can reset under the restoring force effect of Compress Spring 8.
Adopt four sliding driving devices and outlet structure, all and contact with sea water, inner face contacts with internal flow in internal main piston 6 outer face, can directly open inside and outside fluid passage, perfusion seawater, when pressure reaches balance, Compress Spring 8 can make main piston 6 reset, and disconnects inside and outside fluid passage.In order to increase the reliability of operation further, this pouring valve device is also provided with four auxiliary fluid cylinders 4 and can carries out Long-distance Control in addition, the slide device not completing movement because breaking down can being made to move, further ensuring the security reliability of operation.
Claims (4)
1. an external multi-piston type Offshore Drilling Riser pouring valve, its feature is: comprise main pipe (1), the inner passage of this main pipe (1) communicates with marine riser string inside, the barrel of main pipe (1) circumferentially evenly has multiple circulating window (11), and each circulating window (11) is circumscribed with a slide device;
The structure of each slide device is, comprise a cavity be tightly connected with main pipe (1) outer wall, this cavity upper and lower end face is respectively arranged with through hole and lower through-hole, main piston (6) is provided with in this cavity, main piston (6) body of rod is circumferentially set with Compress Spring (8), Compress Spring (8) upper end withstands on cavity inner wall, and Compress Spring (8) lower end apical grafting is at main piston (6) piston head upper surface;
During original state, main piston (6) piston head and cavity lower through-hole compress completely.
2. external multi-piston type Offshore Drilling Riser pouring valve according to claim 1, its feature is: on the cavity contacted with main piston (6) body of rod, through-hole wall is provided with upper sealing ring (7), and the piston head excircle of main piston (6) is provided with lower seal (9).
3. external multi-piston type Offshore Drilling Riser pouring valve according to claim 1, its feature is: be respectively arranged with an auxiliary fluid cylinder (4) at the upper-lower position of each slide device, and top assists the auxiliary piston rod of fluid cylinder (4) (5) termination to arrange down; Auxiliary piston rod (5) termination of the auxiliary fluid cylinder (4) in below is arranged upward, concentric corresponding with the main piston (6) of axis respectively.
4. external multi-piston type Offshore Drilling Riser pouring valve according to claim 3, its feature is: the cylinder body bottom of each auxiliary fluid cylinder (4) is fixed on auxiliary fluid cylinder junction plate (2), be fixed in gripper shoe (3) in the middle part of cylinder body, auxiliary fluid cylinder junction plate (2) is fixedly connected with the excircle of gripper shoe (3) with main pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478798.6U CN204060588U (en) | 2014-08-22 | 2014-08-22 | A kind of external multi-piston type Offshore Drilling Riser pouring valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478798.6U CN204060588U (en) | 2014-08-22 | 2014-08-22 | A kind of external multi-piston type Offshore Drilling Riser pouring valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060588U true CN204060588U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420478798.6U Expired - Fee Related CN204060588U (en) | 2014-08-22 | 2014-08-22 | A kind of external multi-piston type Offshore Drilling Riser pouring valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204060588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929550A (en) * | 2015-06-08 | 2015-09-23 | 成都欧迅海洋工程装备科技有限公司 | Intelligent control system of filling valve of water separating pipe of marine drilling platform and filling valve |
-
2014
- 2014-08-22 CN CN201420478798.6U patent/CN204060588U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929550A (en) * | 2015-06-08 | 2015-09-23 | 成都欧迅海洋工程装备科技有限公司 | Intelligent control system of filling valve of water separating pipe of marine drilling platform and filling valve |
| CN104929550B (en) * | 2015-06-08 | 2018-06-26 | 成都欧迅科技股份有限公司 | A kind of marine drilling platform marine riser pouring valve intelligence control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201231 Address after: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee after: BAOJI OILFIELD MACHINERY Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co.,Ltd. Address before: 721002 No. 2 Dongfeng Road, Shaanxi, Baoji Patentee before: Baoji Oilfield Machinery Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |