CN205101675U - Long distance submarine pipe line is pipe laying construction system after ditching in advance - Google Patents
Long distance submarine pipe line is pipe laying construction system after ditching in advance Download PDFInfo
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- CN205101675U CN205101675U CN201520739360.3U CN201520739360U CN205101675U CN 205101675 U CN205101675 U CN 205101675U CN 201520739360 U CN201520739360 U CN 201520739360U CN 205101675 U CN205101675 U CN 205101675U
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- grab bucket
- bucket
- ditching
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Abstract
The utility model relates to a long distance submarine pipe line is pipe laying construction system after ditching in advance, it includes: grab grab dredger, grabbing grab dredger and including jib crane and grab bucket, wherein, the jib crane is equipped with transmission system and control system, and diesel engine of establishing in transmission system includes and transmission, control system include elevator bucket cylinder, switching fill cylinder and become width of cloth cylinder that above -mentioned each cylinder all twines the steel cable to be equipped with clutch and brake, and level measurement parts at the bottom of the ditch, its water including being used for piercing through the mud scum layer of pipeline slot is cut or polish jade with an emery wheel, wherein, the elevator bucket cylinder passes through the steel cable and is connected with the grab bucket for the lift of drive grab bucket, wherein, switching fill cylinder passes through the steel cable and is connected with the grab bucket for the switching of drive grab bucket, wherein, a change width of cloth cylinder passes through the steel cable and is connected with the derrick for the length of control derrick.
Description
Technical field
The application relates to the technical field of undersea pipe-laying, is specifically related to a kind of long apart from pipe laying construction system after the pre-ditching of submerged pipeline.
Background technique
Along with offshore oil and gas field exploitation is constantly to deep layer and frontier expansion; offshore platform process treating flow process more and more simplifies; increasing submerged pipeline is used; the phenomenon of passing through the high traffic section marine sites such as busy navigation channel, harbour is inevitably there will be, therefore for protecting pipeline to add great burying in pipe installation process.The degree of depth buried underground is that traditional rear trenching machine cannot realize, and therefore needs long apart from pipe laying after pre-ditching.
At present, domestic and international specification is to pipe laying construction technology after the pre-ditching of long distance submerged pipeline, be only " sufficientlysmooth " to the requirement of pipe trench in DNV-OS-F101, i.e. qualitative regulation (the thetrenchshallbeexcavatedtoasufficientlysmoothprofiletom inimisethepossibilityofdamagestothepipeline of " enough level and smooth ", coatingandanodes), but operability is very poor in practice of construction, be difficult to the stable case judging pipeline.The not long construction precedent apart from pipe laying after the pre-ditching of submerged pipeline both at home and abroad.
Model utility content
For above situation, the model utility people of the application, on the basis of consulting data at home and abroad, by large component analysis and test, develops a set of satisfied long system apart from pipe laying construction after the pre-ditching of submerged pipeline.This system, based on proposing the long solution apart from pipe laying construction after the pre-ditching of submerged pipeline first, has ensured the safety of new tubing.The method considers controlled investment, reduction of erection time, facilitates the aspect factors such as site operation, breach ditching mode after traditional first pipe laying first, formed and be applicable to the long technological scheme apart from pipe laying construction after the pre-ditching of submerged pipeline, after growing the pre-ditching of distance submerged pipeline, pipe laying construction technology successful Application is in the branch line submarine pipeline state key project financing of the second west to east gas pipeline project Hong Kong.
This system has the features such as economy, efficient, pollution-free, strong operability, meets construction requirement.
According to embodiment of the present utility model, provide a kind of long apart from pipe laying construction system after the pre-ditching of submerged pipeline, it is characterized in that comprising: grab dredger, described grab dredger comprises grab claw and grab bucket, wherein, grab claw is equipped with transmission system and control system, the diesel engine established in transmission system comprises and transmission device, diesel engine provides the power of winding wirerope, transmission device comprises derrick, control system comprises the elevator scoop cylinder connected by transmission device, opening and closing bucket cylinder and luffing cylinder, each cylinder above-mentioned is all wound around wirerope, and be provided with clutch and brake, and bottom of trench level measurement parts, it comprises the water stone roller of the Mud Layer for penetrating pipeline groove, wherein, described elevator scoop cylinder is connected, for driving the lifting of grab bucket with grab bucket by wirerope, wherein, described opening and closing bucket cylinder is connected with grab bucket by wirerope, for driving the opening and closing of grab bucket, wherein, described luffing cylinder is connected with derrick by wirerope, for controlling the flexible length of derrick.
According to embodiment of the present utility model, described water stone roller is made by Φ 50 × 455mm round steel, can penetrate the Mud Layer of pipeline groove.
According to embodiment of the present utility model, control system is used for when carrying out pre-ditching, grab bucket being risen to above the water surface for digging position mud layer, grab bucket being opened completely by described opening and closing bucket cylinder by described elevator scoop cylinder, rely on grab bucket deadweight again, mud layer certain depth is inserted in grab bucket.
According to embodiment of the present utility model, control system also for being promoted the wirerope connecting grab bucket by described elevator scoop cylinder, controls the length of derrick by described luffing cylinder, afterwards by the closed grab bucket of described opening and closing bucket cylinder, to excavate and to capture silt.
According to embodiment of the present utility model, control system is also for elevator scoop cylinder and opening and closing bucket cylinder, the grab bucket of filling silt is lifted out water surface certain altitude, and the derrick of be rotatably connected grab bucket and control system, the silt of excavation is discharged into the hopper on the ship side side by refuting dredger, and above the water surface that grab bucket is back to for digging position mud layer, complete a work cycle.
The utility model has following beneficial effect:
1, be pipe laying construction after the pre-ditching of domestic first vice-minister distance submerged pipeline, pipeline specifications does not recommend way, and pipe laying construction after the pre-ditching of long distance submerged pipeline, at home and abroad all beyond example;
2, economic, efficient, strong operability.Effectively can solve engineering place marine area function zoning complexity, boats and ships frequent activity, program practice are tight, the implementing plan duration is tight requirement.
3, pipe laying construction after the pre-ditching of long distance submerged pipeline, in ditching, the control of bottom of trench flatness is improper, very easily causes newly-built pipeline localized stress excessive, causes distortion even to damage, produces immeasurable consequence.The program can meet the feature that this project program practice is tight, the implementing plan duration is tight, meets field engineering requirement.
4, in engineering, achieve good effect, the long practical problem apart from pipe laying construction and duration anxiety after the pre-ditching of submerged pipeline can be solved, produce obvious economic benefit.
5, pipe laying construction after the pre-ditching of long distance submerged pipeline, at home and abroad all beyond example, applies first in the branch line submarine pipeline engineering of the second west to east gas pipeline project Hong Kong, successfully solves a difficult problem for pipe laying after nearly 20 kilometers of pre-ditchings.Therefore, the breakthrough of this technology, has great importance to the technical barrier etc. of pipe laying construction after the pre-ditching of China's submerged pipeline that fills the domestic gaps, solves.Construction for submarine pipeline of the same trade provides strong reference reference value.
Accompanying drawing explanation
Fig. 1 is the pipe canal digging sectional view according to embodiment of the present utility model;
Fig. 2 is segmentation according to embodiment of the present utility model and itemize ditching figure;
Fig. 3 is the layering ladder excavation figure according to embodiment of the present utility model;
Fig. 4 to dredge figure according to the grab boat of embodiment of the present utility model.
Wherein, in Fig. 2 1. to 5. representing each itemize, 1. the arrow in left side represents boats and ships movement direction, and 6 in Fig. 4 represents grab bucket, and 7 represent hoppers, 8 represent before anchor, 9 represent dredgers, 10 represent after anchor, 11 represent mud faces.
Embodiment
Pipe laying construction scheme after the pre-ditching of long distance submerged pipeline:
This application provides following technological scheme:
(1) piping design figure and pipe laying environmental analysis
Fig. 1 is the pipe canal digging sectional view according to embodiment of the present utility model.
By the analysis of the depth of water to piping design figure and pipe laying marine site, geology, wind, wave, stream situation, determine the excavation that grab dredger is applicable to designing pipe trench.
(2) after pre-ditching, pipe laying risk point is analyzed
Risk sources maximum in construction operation is in the impact of pipe trench flatness on the On-bottom stability of pipeline.Different from ditching after first pipe laying common in ocean engineering, the sea pre-ditching technique of pipe is similar to the bedding excavation in dredging works, and cross section is little, and length is large, bottom of trench flatness is the principal risk point of pipe laying construction after pre-ditching, and the steady safety directly affecting pipeline enters ditch.
(3) pipe canal digging methods analyst
By the research to pipe canal digging facility its own system, clearly coordinate the pipe canal digging method of pipe laying construction.Grab dredger is the ship type that in dredger, a kind of adaptability is stronger, is applicable to the dredging operation of pipe trench.Fig. 4 to dredge figure according to the grab boat of embodiment of the present utility model.As shown in Figure 4, the major constituents of grab dredger comprises grab claw and grab bucket two-part.Wherein grab claw is equipped with transmission system and control system.Transmission system is made up of, for driving lifting and the opening and closing of grab bucket the interior diesel engine established and transmission device; Control system is made up of elevator scoop cylinder, opening and closing bucket cylinder and luffing cylinder, and cylinder is equipped with clutch and brake, adopts hydraulic control mode, automatically can control bucket speed and dig dark, automatically slowing down falling speed, steady the end, and ensures that grab bucket is all opened.During work, above the water surface rising to position of dredging by grabbing bucket, by controlling opening and closing bucket cylinder, grab bucket is opened completely, grab bucket deadweight is relied on to pour in water again, mud layer certain depth is inserted in grab bucket, then wirerope is promoted, closed grab bucket is to excavate and to capture silt, finally, control elevator scoop cylinder and opening and closing bucket cylinder, the grab bucket of filling silt is lifted out water surface certain altitude, and rotate suspension rod, be discharged into by the silt of excavation by refuting the other hopper of ship side of dredging, grab bucket is back to a top of dredging, and completes a work cycle.
Fig. 2 is segmentation according to embodiment of the present utility model and itemize ditching figure; Fig. 3 is the layering ladder excavation figure according to embodiment of the present utility model.As shown in Figure 2,3, more than pipeline end face adopt large-scale grab boat slightly to dig, bottom 0.5m ~ 1m adopts the small-sized grab boat with depthkeeping function to carry out essence and digs.The mode of dredging adopts subregion, segmentation, itemize to carry out, and every layer of thick mud layer of excavation 2m, every about the 100m of grab dredger is a section length, and every 12m is an itemize width.Branch line side slope of dredging in Hong Kong is 1:4 and 1:7, layering ladder excavation need be carried out, according to the principle of " lower super deficient; super underbalance ", slightly dig back domatic engrail, layer of not dredging is disturbed in digging process, and disturbed soil collapses into 1:1 side slope under gravity naturally, rear local finding slope, finally forms the side slope of 1:4 and 1:7.
Finally it should be noted that obviously above-described embodiment is only for the utility model example is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.
Claims (5)
1. a pipe laying construction system after the pre-ditching of long distance submerged pipeline, is characterized in that comprising:
Grab dredger, described grab dredger comprises grab claw and grab bucket, wherein, grab claw is equipped with transmission system and control system, the diesel engine established in transmission system comprises and transmission device, and diesel engine provides the power of winding wirerope, transmission device comprises derrick, control system comprises the elevator scoop cylinder, opening and closing bucket cylinder and the luffing cylinder that are connected by transmission device, and each cylinder above-mentioned is all wound around wirerope, and is provided with clutch and brake; And
Bottom of trench level measurement parts, it comprises the water stone roller of the Mud Layer for penetrating pipeline groove,
Wherein, described elevator scoop cylinder is connected with grab bucket by wirerope, for driving the lifting of grab bucket,
Wherein, described opening and closing bucket cylinder is connected with grab bucket by wirerope, for driving the opening and closing of grab bucket,
Wherein, described luffing cylinder is connected with derrick by wirerope, for controlling the flexible length of derrick.
2. pipe laying construction system after the pre-ditching of long distance submerged pipeline according to claim 1, is characterized in that, described water stone roller is made by Φ 50 × 455mm round steel, can penetrate the Mud Layer of pipeline groove.
3. pipe laying construction system after the pre-ditching of long distance submerged pipeline according to claim 1, it is characterized in that, control system also for: when carrying out pre-ditching, by described elevator scoop cylinder, grab bucket is risen to above the water surface for digging position mud layer, by described opening and closing bucket cylinder, grab bucket is opened completely, rely on grab bucket deadweight again, mud layer certain depth is inserted in grab bucket.
4. pipe laying construction system after the pre-ditching of long distance submerged pipeline according to claim 3, it is characterized in that, control system also for: promoted the wirerope connecting grab bucket by described elevator scoop cylinder, the length of derrick is controlled by described luffing cylinder, afterwards by the closed grab bucket of described opening and closing bucket cylinder, to excavate and to capture silt.
5. pipe laying construction system after the pre-ditching of long distance submerged pipeline according to claim 4, it is characterized in that, control system is also for: elevator scoop cylinder and opening and closing bucket cylinder, the grab bucket of filling silt is lifted out water surface certain altitude, and the derrick of be rotatably connected grab bucket and control system, the silt of excavation is discharged into the hopper on the ship side side by refuting dredger, and above the water surface that grab bucket is back to for digging position mud layer, completes a work cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739360.3U CN205101675U (en) | 2015-09-23 | 2015-09-23 | Long distance submarine pipe line is pipe laying construction system after ditching in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520739360.3U CN205101675U (en) | 2015-09-23 | 2015-09-23 | Long distance submarine pipe line is pipe laying construction system after ditching in advance |
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| Publication Number | Publication Date |
|---|---|
| CN205101675U true CN205101675U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520739360.3U Expired - Fee Related CN205101675U (en) | 2015-09-23 | 2015-09-23 | Long distance submarine pipe line is pipe laying construction system after ditching in advance |
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| CN (1) | CN205101675U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555387A (en) * | 2017-01-18 | 2017-04-05 | 深圳海油工程水下技术有限公司 | A kind of sea bed preprocess method based on jet |
| CN108512134A (en) * | 2018-03-27 | 2018-09-07 | 江苏华西村海洋工程服务有限公司 | Shallow water area branch cable laying process |
| CN112081167A (en) * | 2020-09-08 | 2020-12-15 | 镇江市亿华系统集成有限公司 | Control method for high-flatness grab bucket ship foundation trench fine excavation operation |
-
2015
- 2015-09-23 CN CN201520739360.3U patent/CN205101675U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555387A (en) * | 2017-01-18 | 2017-04-05 | 深圳海油工程水下技术有限公司 | A kind of sea bed preprocess method based on jet |
| CN108512134A (en) * | 2018-03-27 | 2018-09-07 | 江苏华西村海洋工程服务有限公司 | Shallow water area branch cable laying process |
| CN112081167A (en) * | 2020-09-08 | 2020-12-15 | 镇江市亿华系统集成有限公司 | Control method for high-flatness grab bucket ship foundation trench fine excavation operation |
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| 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: 20160323 Termination date: 20170923 |
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| CF01 | Termination of patent right due to non-payment of annual fee |