CN202611619U - Top tension device for waterproof casing pipe - Google Patents
Top tension device for waterproof casing pipe Download PDFInfo
- Publication number
- CN202611619U CN202611619U CN 201220141148 CN201220141148U CN202611619U CN 202611619 U CN202611619 U CN 202611619U CN 201220141148 CN201220141148 CN 201220141148 CN 201220141148 U CN201220141148 U CN 201220141148U CN 202611619 U CN202611619 U CN 202611619U
- Authority
- CN
- China
- Prior art keywords
- waterproof casing
- casing pipe
- oil
- cylinder
- waterproof
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a top tension device for a waterproof casing pipe. According to the top tension device, even numbers of at least more than four oil cylinders are arranged on a bottom plate of a base; the upper end of a piston rod of each oil cylinder is connected with a telescopic cylinder; the upper end of the telescopic cylinder is concentrically provided with a bushing; hydraulic lines of oil inlets of all hydraulic cylinders are connected with an energy accumulator; a control system is arranged between the energy accumulator and the hydraulic lines; the lower end of the telescopic cylinder is in a cylindrical shape; and surface of the excircle of the telescopic cylinder is in matched muff coupling with the surface of the inner circle of the base. According to the tension device for the waterproof casing pipe, a certain tensile force is applied to the top of the waterproof casing pipe, and the bending stress of the waterproof casing pipe is within the permissible range under the action of ocean waves and ocean current; and the top of the waterproof casing pipe is in flexible connection, so that a waterproof conduit can be stretched and retracted in the longitudinal direction, fatigue damage caused by rigid connection is eliminated, and the using safety is improved.
Description
Technical field
The utility model belongs to oil, natural gas exploration and development equipment technology field, relates to a kind of waterproof casing top tensioner.
Background technology
At present; In the process of jack-up unit offshore oil drilling, the riser pipe top mainly is to apply certain horizontal restraint with chain, along with the increase of the depth of water; Hardwired mode is adopted at this waterproof casing top, might cause waterproof casing under the effect of wave, to produce stress rupture.
Summary of the invention
The purpose of the utility model provides a kind of waterproof casing top tensioner, has solved in the prior art waterproof casing top and has adopted hardwired mode, possibly cause waterproof casing under the effect of wave, to produce the problem of stress rupture.
The technical scheme that the utility model adopted is; A kind of waterproof casing top tensioner; At least 4 above even number oil cylinders are installed on the base plate of base, and the piston rod upper end of each oil cylinder links to each other with retracting cylinder simultaneously, and the upper end of retracting cylinder is provided with bushing with one heart; The oil-in hydraulic line of all fluid cylinders links to each other with accumulator, is provided with the control system between accumulator and the hydraulic line; Described retracting cylinder lower end is cylindric, and the outer round surface of retracting cylinder cooperates socket with the internal circular surfaces of base.
The beneficial effect of the utility model is; For a kind of self-lifting type marine drilling platform is used the waterproof casing top tensioner; It is installed in the stern of jack-up unit, stretcher platform top, and effect is to apply a kind of lasting tensile force to the waterproof casing top; Keep the stability of waterproof casing in seawater, strengthened the waterproof casing opposing simultaneously because the casing buckling destruction that the effect of wave, ocean current produces.
Description of drawings
Fig. 1 is the agent structure sketch map of the utility model waterproof casing top tensioner;
Fig. 2 is the user mode structural representation of the utility model waterproof casing top tensioner.
Among the figure, 1. base, 2. oil cylinder, 3. retracting cylinder, 4. bushing, 5. hydraulic line, 6. accumulator, 7. control system.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is elaborated.
Like Fig. 1, shown in Figure 2, the structure of the waterproof casing top tensioner of the utility model is: the frame construction that base 1 is welded for monolithic, mainly carry the oil cylinder reaction force, and its center is a through-hole structure, can pass through waterproof casing; (along the through hole circumference or on every side) is equipped with at least 4 above even numbers (preferred 4 or 8) oil cylinder 2 on the base plate of base 1; The piston rod upper end of each oil cylinder 2 links to each other with retracting cylinder 3 simultaneously; The upper end of retracting cylinder 3 is provided with bushing 4 with one heart, and the internal circular surfaces of bushing 4 and waterproof casing connect as one with the mode of card tooth; The oil-in hydraulic line 5 of all fluid cylinders 2 links to each other with accumulator 6, has stored energy, reduces the effect of impacting, and is provided with control system 7 between accumulator 6 and the hydraulic line 5.
Retracting cylinder 3 lower ends are a cylinder-like structure, and the internal circular surfaces of its outer round surface and base 1 is a fitting face, and the outer round surface of retracting cylinder 3 can freely vertically move in the internal circular surfaces of base 1.Retracting cylinder 3 and base 1 telescopic moving relatively also can the load level wave force be applied to outer year of horizontal direction on the riser pipe, and its telescoping cylinder is that oil cylinder also can be a cylinder, and the cylinder body layout can also can be tilting for vertical type.
Bushing 4 is for dividing half formula structure, and there is the card tooth inboard, and the internal circular surfaces of bushing 4 is connected with the mode of waterproof casing with the card tooth, can waterproof casing be tightened; Also can be at sleeve pipe top welding load-carrying ring, bushing 4 directly with thrust in load-carrying ring.Bushing 4 has the internal diameter of different size, adapts to the waterproof casing of different size.
When the waterproof casing top tensioner of the utility model is worked; Waterproof casing is through the through hole at stretcher center; Its top and bushing 4 are fixedly connected; Accumulator 6 communicates with oil cylinder 2 lower end rodless cavities through hydraulic line 5, and the pressure that increases accumulator 6 then stretches out the piston rod of oil cylinder 2 and reaches the tension force that waterproof casing is set.When wave or action of ocean current in waterproof casing; Force waterproof casing flexural deformation, its longitudinal length shortens, oil cylinder 2 piston rods withdrawal this moment; Can compensate the variation of waterproof casing fore-and-aft distance; The simultaneously sustainable top tension force that provides waterproof casing to set has improved the force-bearing situation of waterproof casing, has improved its application life.
The waterproof casing top tensioner of the utility model; Apply certain tensioning for the waterproof casing top; Guarantee waterproof casing under the effect that receives wave and ocean current, the flexural stress of waterproof casing is within tolerance zone, and being connected to of waterproof casing top is flexible coupling simultaneously; Can make the riser pipe longitudinal extension, eliminate the fatigue failure that hard connection brings.Through using fluid cylinder constant top tension force to be provided to riser pipe; The stability of waterproof casing in the ocean is improved greatly; And owing to fluid cylinder links to each other with accumulator with hydraulic oil; Therefore waterproof casing can have been eliminated the stress fatigue destruction that hard connection brings with the piston rod stretching motion of stretcher fluid cylinder under the effect of wave, has improved the safety that waterproof casing uses.
The device of the utility model, rational in infrastructure, compact, easy to operate, reliable, satisfy self lift type offshore oil drilling platform requirements of one's work fully.
Claims (3)
1. waterproof casing top tensioner; It is characterized in that: at least 4 above even number oil cylinders (2) are installed on the base plate of base (1); The piston rod upper end of each oil cylinder (2) links to each other with retracting cylinder (3) simultaneously; The upper end of retracting cylinder (3) is provided with bushing (4) with one heart, and the oil-in hydraulic line (5) of all fluid cylinders (2) links to each other with accumulator (6), is provided with control system (7) between accumulator (6) and the hydraulic line (5);
Described retracting cylinder (3) lower end is cylindric, and the outer round surface of retracting cylinder (3) cooperates socket with the internal circular surfaces of base (1).
2. waterproof casing top tensioner according to claim 1 is characterized in that: the internal circular surfaces of described bushing (4) is connected with the mode of waterproof casing with the card tooth.
3. waterproof casing top tensioner according to claim 1 is characterized in that: described oil cylinder (2) adopts 4 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220141148 CN202611619U (en) | 2012-04-06 | 2012-04-06 | Top tension device for waterproof casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220141148 CN202611619U (en) | 2012-04-06 | 2012-04-06 | Top tension device for waterproof casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611619U true CN202611619U (en) | 2012-12-19 |
Family
ID=47345328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220141148 Expired - Fee Related CN202611619U (en) | 2012-04-06 | 2012-04-06 | Top tension device for waterproof casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628341A (en) * | 2012-04-06 | 2012-08-08 | 宝鸡石油机械有限责任公司 | Top tensioning device for waterproof casing tube |
| CN104198179A (en) * | 2014-09-22 | 2014-12-10 | 上海外高桥造船有限公司 | Load test method for casing tensioner of self-elevating platform |
-
2012
- 2012-04-06 CN CN 201220141148 patent/CN202611619U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628341A (en) * | 2012-04-06 | 2012-08-08 | 宝鸡石油机械有限责任公司 | Top tensioning device for waterproof casing tube |
| CN104198179A (en) * | 2014-09-22 | 2014-12-10 | 上海外高桥造船有限公司 | Load test method for casing tensioner of self-elevating platform |
| CN104198179B (en) * | 2014-09-22 | 2016-06-01 | 上海外高桥造船有限公司 | For the load test method of the sleeve pipe stretcher of jack-up unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100507202C (en) | Drilling column heave compensator for floating drill platform in the sea | |
| US4226555A (en) | Mooring system for tension leg platform | |
| US3986368A (en) | Load equalizing and shock absorber system for off-shore drilling rigs | |
| US6688814B2 (en) | Adjustable rigid riser connector | |
| CN105857532A (en) | General offshore platform as well as buoyancy adjustment method and stable power generation method thereof | |
| CN102330541A (en) | Marine drilling riser tensioning system | |
| CN101798909A (en) | Drilling column heave compensation device of marine floating type drilling platform | |
| GB2467229A (en) | Vertically and rotationally adjustable wave energy mounting arrangement | |
| CN102452461B (en) | For the system of supplementary tensioning of Platform Designing strengthened and correlation technique | |
| CN203716129U (en) | Inserting pin type lifting device used for truss type pile legs | |
| CN202611619U (en) | Top tension device for waterproof casing pipe | |
| EP3150845A3 (en) | Wave energy conversion | |
| CN103046521A (en) | Novel, simple and easy wellhead rack structure and construction method | |
| CN106697209A (en) | Deep water tension leg platform device and real-time monitoring method of vertical pipe thereof | |
| CN102220754A (en) | Lifting apparatus for ship | |
| CN104641067A (en) | Top-tensioned riser system | |
| CN102628341B (en) | Top tensioning device for waterproof casing tube | |
| CN104805821A (en) | Self-elevating platform for compressing offshore oil field gas | |
| CN104421491B (en) | A kind ofly uphang working equipment and the operational method across submerged pipeline processing for deep water | |
| CN102235548A (en) | Installation device for deepwater stand pipes and underwater facilities | |
| CN209938889U (en) | Direct-acting tension leg platform oil production riser tensioning device | |
| CN107631893A (en) | A kind of heave compensation testing stand for simulating hydraulic jack Synchronous lifting shipwreck | |
| CN111470012A (en) | Integrated diving bell winding and unwinding system | |
| CN208617269U (en) | A kind of ROV heave compensation system | |
| CN1010116B (en) | Hydraulic tide-generator based on horizontal movement of pontoon |
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: 20160406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |