CN204255713U - Pipeline pit defect manufacturing device - Google Patents
Pipeline pit defect manufacturing device Download PDFInfo
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- CN204255713U CN204255713U CN201420642402.7U CN201420642402U CN204255713U CN 204255713 U CN204255713 U CN 204255713U CN 201420642402 U CN201420642402 U CN 201420642402U CN 204255713 U CN204255713 U CN 204255713U
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- stressed plate
- pit
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- 230000007547 defect Effects 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title 1
- 230000004308 accommodation Effects 0.000 claims abstract description 20
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000931705 Cicada Species 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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Abstract
The utility model discloses a pipeline pit defect making devices for the required pit defect of developing of carrying out and the experiment of pit defect resilience is carried out for the preparation of pit defect tractive is experimental. The pit defect producing apparatus includes: the device comprises a support, a pressure head, a stress plate and a jack; the support comprises an accommodating space, and the bottom of the accommodating space is used for placing a pipeline; the pressure head set up in the pipeline top, the atress board set up in the pressure head top, and the jack set up in atress board top makes the one end of jack with the top contact of accommodation space, the other end with the atress board contacts.
Description
Technical field
The utility model relates to piping system technical field, is specifically related to a kind of pipeline pit defect producing device.
Background technology
Pit is total distortion cross-section of pipeline being occurred due to tube wall permanent plastic deformation, is one of common form of pipeline geometrical defect.Pit depth is commonly defined as the maximum decrease relative to former caliber in diametric(al), be affect plane pit burst strength and fatigue lifetime most important factor.Pit can occur in pipeline construction construction period, due to the pipeline pit that the reasons such as the collision in carrying, backfilling process or rock obstacle cause; Also pipeline can be occurred in during one's term of military service, because the pressure of the foreign object such as excavating equipment, rock is pounded (terrestrial pipeline), the pipeline pit that the reasons such as the destruction (submarine pipeline) of towboat, trawlnet cause.Some pit can cause pipeline failure, and the existence of some pit can have an impact to the bearing capacity of pipeline, and time dependent load effect may make pipeline generation fatigure failure, brings potential hazard to the safe operation of pipeline.In addition, some pit can stop passing through smoothly of rabbit, hinders pigging and tube wall to detect, brings difficulty to the detection of pipeline and management.
For affined pit defect, after removal constraint, can there is resilience in pit, but the size of springback capacity cannot be determined, it may be necessary the springback capacity that pit is determined in test, and how making pit defect is the problem first needing to solve.
The general corrosion default adopting electrochemical etching method to process different size in current engineering, technological means is relatively ripe.And for pit defect, still do not have ripe device can supply to use for reference both at home and abroad, because which limit carrying out of pit defect distraction test, cause verifying that detecting device is to the detection probability of the pit defect of dissimilar, different size and identification probability, have impact on identification and the judgement of pipeline pit defect.Meanwhile, pit defect rebound test is caused also cannot to carry out.As can be seen here, the processing and fabricating of pipeline pit defect is a difficult problem urgently to be resolved hurrily in engineering.
Utility model content
The utility model, in order to carrying out of pit defect distraction test and carrying out of pit defect rebound test, provides a kind of pipeline pit defect producing device.
The utility model embodiment provides a kind of pit defect producing device, comprising: support, pressure head, stressed plate, and lifting jack; Wherein, described support comprises an accommodation space, for placing pipeline bottom described accommodation space; Described pressure head is arranged at above described pipeline, described stressed plate is arranged at above described pressure head, and described lifting jack is arranged at above described stressed plate, make the top contact of one end of described lifting jack and described accommodation space, the other end contacts with described stressed plate.
Optionally, described support specifically comprises two side boards and top flap, and described accommodation space is made up of described two side boards and described top flap.
Optionally, the type of described pressure head and the type adaptation of pit to be produced.
Optionally, described pressure head is inverted pyramid shape or is inverted semisphere.
Optionally, be fixedly connected with between described support with described lifting jack, be fixedly connected with between described lifting jack with described stressed plate, for removably connecting between described stressed plate and described pressure head.
Technical scheme in above-mentioned the utility model embodiment, at least has following technique effect or advantage:
Pit defect producing device provided by the utility model comprises support, pressure head, stressed plate, and lifting jack; Wherein, support comprises the accommodation space for placing pipeline; Pressure head is arranged at above pipeline, and stressed plate is arranged at above pressure head, and lifting jack is arranged at above stressed plate, and make one end of lifting jack and the top contact of accommodation space, the other end contacts with stressed plate.Thus pipeline is when being positioned in accommodation space, adjustment lifting jack or stressed plate height just can make support, lifting jack, stressed plate, pressure head, pipeline five parts be fixed as one, and then it is afterburning to rise lifting jack, pressure head will form pit defect on pipeline, therefore, it is possible to different tube diameters pipeline pit defect processing and fabricating can be carried out, and make pit defect at the diverse location of pipeline.And then the rising height of the lifting jack of pit producing device provided by the utility model is different, the displacement of pressure head is just different, and then the degree of depth of pit is just corresponding different, achieve the pit defect processing and fabricating of different size, and device is simple.To sum up, technical scheme provided by the utility model can produce the pit defect needed for the rebound test of pit defect distraction test pit defect.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of the body pit defect producing device in the utility model.
Embodiment
In order to carrying out of pit defect distraction test and carrying out of pit defect rebound test, provide a kind of pipeline pit defect producing device, to produce the pit defect needed for pit defect distraction test and pit defect rebound test.
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Shown in figure 1, pit defect producing device comprises: support 1, pressure head 2, stressed plate 3, and lifting jack 4; Wherein, support 1 comprises accommodation space 5, for placing pipeline 6 bottom accommodation space 5; Pressure head 2 is arranged at above pipeline 6, stressed plate 3 is arranged at above pressure head 2, and lifting jack 4 is arranged at above stressed plate 3, make one end of lifting jack 4 and the top contact of accommodation space 5, the other end contacts with stressed plate 3, and support 1, pressure head 2, stressed plate 3, lifting jack 4, pipeline 6 are fixed as one.In specific implementation process, a kind of embodiment is: between support 1 and lifting jack 4, between lifting jack 4 and stressed plate 3, all by being fixedly connected with between stressed plate 3 with pressure head 2, concrete, for removably connecting between pressure head 2 and stressed plate 3, so that the type of pressure head can be changed as required for inverted pyramid or the pressure head being inverted semisphere or other types, thus different pit defect types can be obtained.Certainly, in specific implementation process, support 1, pressure head 2, stressed plate 3, and for other modes link together between lifting jack 4.
Concrete, highly support 1, pressure head 2, stressed plate 3, lifting jack 4 and pipeline 6 can be fixed as one by adjustment lifting jack 4 or stressed plate 3.In the indeformable situation of guarantee support 1, power, in lifting jack 4, is delivered on pressure head 2 by stressed plate 3 by External Force Acting, and the height that lifting jack is 4 liters is the degree of depth of pit defect.In specific implementation process, the height that lifting jack is 4 liters according to presetting, thus produces the pit defect of predetermined depth on pipeline 6.
Shown in figure 1, in one embodiment, support 1 specifically comprises two side board 1A and top flap 1B, and accommodation space 5 is made up of two side board 1A and top flap 1B, forms the accommodation space 5 of rectangle.Certainly in specific implementation process, support 1 also can be the accommodation space 5 of other shapes that multiple baffle plate is formed, or multiple column and top flap formation accommodation space 5.
The type of pressure head 2 and the type adaptation of pit to be produced, concrete, pressure head 2 is inverted pyramid shape or is inverted semisphere.According to the pit defect type of test design, select dissimilar pressure head 2.Pressure head 2 top (one end that sectional area is less) contacts with center, pipeline 6 pit defect place to be produced, and bottom pressure head 2, stressed plate 3 is placed in (one end that sectional area is larger) top.
Utilize pipeline 6 defect producing device of the present utility model to process pit defect to be specially: according to pit defect rebound test or the design of pit defect distraction test of pipeline 6, go out to need in pipeline 6 surface indicia the position making pit defect with marking pen, then body 6 lifting is placed in support 1, the place-centric of pit defect to be produced is just in time arranged at immediately below support 1.The type of the pit defect then needed for test design, select the type of different pressure heads 2, make the bottom-up of pressure head 2, vertical state top down, the top of pressure head 2 contacts with the center of pipeline 6 pit defect to be produced, stressed plate 3 is placed on bottom pressure head 2, again lifting jack 4 is discharged on stressed plate 3, the height of adjustment lifting jack 4 or stressed plate 3, support 1, pressure head 2, stressed plate 3, lifting jack 4 and pipeline 6 are fixed as one, finally continue to rise lifting jack 4 to predetermined altitude, complete at the pit defect processing and fabricating of the position of the pit defect to be produced of pipeline 6.
Pipeline 6 is positioned in the accommodation space 5 of support 1, makes the mark position of pit defect to be produced be arranged at immediately below support 1; Above pipeline 6, arrange pressure head 2, the top of pressure head 2 is with mark position just to contacting, and the height of adjustment lifting jack 4 or stressed plate 3, makes pipeline 6, pressure head 2, stressed plate 3, lifting jack 4 and support 1 form integrative-structure; Elevating jack 4, forms pit defect in marked locations.In specific implementation process, repeat the processing that above step carries out other pit defects.
In order to be further detailed embodiment of the present utility model, this example is carried out citing to pit defect producing device to the device and method that the pit defect that diameter is 720mm makes and is described, but be not used in restriction the utility model, those skilled in the art can know the parts of other specifications and form pit defect producing device.
Support 1 is " door " shape frame that three blocks of 200 × 200mm square steel are welded into high 1200mm, wide 1200mm; Pressure head 2 selects radius to be the inversion semisphere of 10mm; Stressed plate 3 is 400 × 200 × 20mm rectangular slab; Lifting jack 4 selects lifting capacity to be 50 tons, and lifting is highly the upright jack of 150mm.
Pit defect make step comprise:
1) go out to need in D813 × 9.5mm pipeline 6 surface indicia the position making pit defect with marking pen;
2) pipeline 6 lifting is placed in support 1, makes pit defect place to be produced just in time be arranged at immediately below support 1;
3) pressure head 2 top is made to contact with the center at pit defect place to be produced on pipeline 6;
4) adjust lifting jack 4 or stressed plate 3 height, support 1, lifting jack 4, stressed plate 3, pressure head 2, pipeline 6 are fixed as one;
5) External Force Acting is in lifting jack 4, and range walking 105mm, so far, a pit defect processing and fabricating completes.
This example is through test of many times, processing and fabricating method is simple, can produce the pit defect of preliminary dimension, solve a difficult problem for pit defect processing and fabricating at preposition accurate machining, improve pipeline integrity test and repair level, there is future in engineering applications widely.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. a pipeline pit defect producing device, is characterized in that, comprising: support, pressure head, stressed plate, and lifting jack; Wherein, described support comprises an accommodation space, for placing pipeline bottom described accommodation space; Described pressure head is arranged at above described pipeline, described stressed plate is arranged at above described pressure head, and described lifting jack is arranged at above described stressed plate, make the top contact of one end of described lifting jack and described accommodation space, the other end contacts with described stressed plate.
2. device as claimed in claim 1, it is characterized in that, described support specifically comprises two side boards and top flap, and described accommodation space is made up of described two side boards and described top flap.
3. device as claimed in claim 1, is characterized in that, the type of described pressure head and the type adaptation of pit to be produced.
4. device as claimed in claim 2, is characterized in that, described pressure head is inverted pyramid shape or is inverted semisphere.
5. the device as described in claim arbitrary in claim 1-4, is characterized in that, is fixedly connected with between described support with described lifting jack, is fixedly connected with between described lifting jack with described stressed plate, for removably connecting between described stressed plate and described pressure head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642402.7U CN204255713U (en) | 2014-10-30 | 2014-10-30 | Pipeline pit defect manufacturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642402.7U CN204255713U (en) | 2014-10-30 | 2014-10-30 | Pipeline pit defect manufacturing device |
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| CN204255713U true CN204255713U (en) | 2015-04-08 |
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| CN201420642402.7U Active CN204255713U (en) | 2014-10-30 | 2014-10-30 | Pipeline pit defect manufacturing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344983A (en) * | 2014-10-30 | 2015-02-11 | 中国石油天然气股份有限公司 | Pipeline pit defect manufacturing device |
| CN104931649A (en) * | 2015-05-18 | 2015-09-23 | 中海石油(中国)有限公司 | Submarine pipeline land simulation test platform and test method |
| CN111122266A (en) * | 2019-12-19 | 2020-05-08 | 西北工业大学 | Device for generating specific local geometric initial defects on outer surface of pipeline |
| CN112113848A (en) * | 2020-09-08 | 2020-12-22 | 天津大学 | Device is applyed to submarine pipeline initial defect |
-
2014
- 2014-10-30 CN CN201420642402.7U patent/CN204255713U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344983A (en) * | 2014-10-30 | 2015-02-11 | 中国石油天然气股份有限公司 | Pipeline pit defect manufacturing device |
| CN104931649A (en) * | 2015-05-18 | 2015-09-23 | 中海石油(中国)有限公司 | Submarine pipeline land simulation test platform and test method |
| CN111122266A (en) * | 2019-12-19 | 2020-05-08 | 西北工业大学 | Device for generating specific local geometric initial defects on outer surface of pipeline |
| CN111122266B (en) * | 2019-12-19 | 2021-06-25 | 西北工业大学 | Device for generating specific local geometric initial defects on outer surface of pipeline |
| CN112113848A (en) * | 2020-09-08 | 2020-12-22 | 天津大学 | Device is applyed to submarine pipeline initial defect |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211105 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |