CN102778395A - In-service pipeline settlement simulation test method and device - Google Patents
In-service pipeline settlement simulation test method and device Download PDFInfo
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- CN102778395A CN102778395A CN2011101246857A CN201110124685A CN102778395A CN 102778395 A CN102778395 A CN 102778395A CN 2011101246857 A CN2011101246857 A CN 2011101246857A CN 201110124685 A CN201110124685 A CN 201110124685A CN 102778395 A CN102778395 A CN 102778395A
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- testing conduit
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- water filling
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- 238000010998 test method Methods 0.000 title abstract description 10
- 238000004088 simulation Methods 0.000 title abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 73
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 6
- 230000002950 deficient Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
Relating to the technical field of pipeline systems, the invention relates to an in-service pipeline settlement simulation test method and a device. The test method comprises: hoisting a tested pipeline (2) onto two support frames (4), adjusting the size of the support frames (4) according to the diameter of the tested pipeline (2) and conducting fixation; additionally hanging nominal weights (3) at preset positions over the tested pipeline (2), observing the pipeline settlement degree through a scale at the midspan of the tested pipeline (2); and then exerting an internal pressure on the tested pipeline (2) through a pressurizing pump, testing the pressure bearing capacity of the pipeline (2) under the combined action of the internal pressure and a bending load. The method and device provided in the invention can simulate the real stress bearing condition of a pipeline with defects, and improve the accuracy of a pipeline integrity assessment result.
Description
Technical field
The present invention is a kind of in-service pipeline sedimentation analog detection method and device.Relate to the piping system technical field.
Background technology
Pipeline bearing capacity test is to estimate one of important method of pipeline integrity situation, and test result can be pipeline management person's decision-making provides foundation and reference.Bury the ground in-service pipeline except pressing in bearing, also receive because the bending stress that soil moves, sedimentation and extruding lifting etc. produce.Present pipeline bearing capacity test is main with simple hydrostatic test or pressure surge test, and buried pipeline also bears the bending stress that produces owing to soil moves, sedimentation etc. except pressing in bearing.Existing method of testing can't wholely be weighed the mechanical behavior of pipeline under the complicated applied force situation with device.How accurately to simulate the force-bearing situation of in-service pipeline, for revising the integrality evaluation method test data is provided, be pipeline management person and scientific research personnel needs the problem of solution badly.
Summary of the invention
The objective of the invention is to invent a kind of in-service pipeline sedimentation analog detection method and device of simulating the true stressing conditions of defective pipeline, improving pipeline integrity evaluation result accuracy.
Technical scheme of the present invention is that the mode through carry nominal weight makes pipeline produce flexural deformation; The true stressing conditions of simulation defective pipeline; Thereby judge the actual bearing capacity of pipeline, solve in interior pressure and external applied load and act on the loading problem of pipeline bearing capacity test down simultaneously.
Through inventing a kind of in-service pipeline sedimentation analog detection method and the device that is designed; Observe the pipeline deflection from the scale of pipe-line spans mid point; The true stressing conditions of simulation defective pipeline; Thereby judge the actual bearing capacity of pipeline, apply internal pressure through pressuring pump to pipeline then, the bearing capacity of testing conduit under interior pressure and bending load acting in conjunction.
Method of testing of the present invention is carried additionally the nominal weight for elder generation precalculated position above pipeline, observes the pipeline deflection from the scale of pipe-line spans mid point; Apply internal pressure through pressuring pump to pipeline then, the bearing capacity of testing conduit under interior pressure and bending load acting in conjunction.
Method of testing: testing conduit 2 is lifted to bracing frame 4, according to the size of the diameter adjustment bracing frame 4 of testing conduit 2 and fix; Nominal weight 3 is carried additionally in the precalculated position above testing conduit 2, observes the pipeline deflection from the scale of testing conduit 2 span centres; Apply internal pressure through pressuring pump to testing conduit 2 then, the bearing capacity of testing conduit 2 under interior pressure and bending load acting in conjunction.
Concrete steps are:
1) height of two end supports frame 4 is 1.2-1.5m, and bracing frame 4 guarantees that along with testing conduit 2 pivots when crooked testing conduit 2 contact with bracing frame 4 maintenance faces all the time in deformation process, avoid testing conduit 2 and bracing frame 4 contact position generation crimps;
2) testing conduit 2 total lengths are 12m-32m, span 10m-30m between two bracing frames 4, and 0.5m-1m is respectively extended at two ends, guarantees that there is the transformation safe surplus at testing conduit 2 two ends in settling process, can adjust elongation according to actual conditions;
3) the external load load mode can be selected to concentrate loading or be uniformly distributed with loading according to the test needs for above testing conduit 2, carrying additionally nominal weight 3;
4) full-automatic pressuring pump through being welded on water filling port 1 on the testing conduit 2 to testing conduit 2 water fillings, applies internal pressure.
Because sedimentation occurs bending and deformation, the pipeline between the settling zone can be equivalent to one section sheet-metal duct beam at the labour buried pipeline in the present invention.Based on this principle, design proper supporting and load mode, simulate the sedimentation of true pipeline.
Analogue means mainly is made up of four parts: bracing frame 4, nominal weight 3, sinking measuring stick, water filling port 1 and full-automatic pressuring pump.
With closed at both ends and at one end have testing conduit 2 that water filling port 1, the other end have a vent valve by two bracing frames 4 in two end supports, the suspension nominal weight 3 at the middle part of testing conduit 2; Full-automatic pressuring pump is connected with water filling port 1, and the sinking measuring stick places the lower edge, middle part of testing conduit 2.
The structure of support frame as described above 4 is seen Fig. 2 and Fig. 3, and it is that top is arc, and the bottom is a rectangular slab, and each is connected with arc and rectangular slab by the two ends of hinged two sections rectangular columns; Wherein the diameter of arc intrados equates with the external diameter of testing conduit 2.
The present invention makes testing conduit 2 produce flexural deformation through the mode of carry nominal weight 3; Solved in interior pressure and external applied load and acted on the loading problem of pipeline bearing capacity test down simultaneously; For the integrality evaluation of setting up based on strain provides method of testing, improved the accuracy of estimating.
The present invention can carry out full-scale pipe sedimentation simulation, and can test the pipe sedimentation distortion of different tube diameters and length.China is increasingly high for the detection and the evaluation demand of pipeline, adopts the present invention can effectively verify the accuracy of evaluation, is with a wide range of applications.
Description of drawings
Fig. 1 in-service pipeline sedimentation simulation test synoptic diagram
Fig. 2 bracing frame front elevation
Fig. 3 bracing frame side view
1-water filling port 2-testing conduit wherein
3-nominal weight 4-bracing frame
Embodiment
Embodiment. this example is a test method and device, and it constitutes shown in Fig. 1-3.
Analogue means mainly is made up of bracing frame 4, nominal weight 3, sinking measuring stick, water filling port 1 and full-automatic pressuring pump four parts; With closed at both ends and at one end have testing conduit 2 that water filling 1, the other end have a vent valve by two bracing frames 4 in two end supports, the suspension nominal weight 3 at the middle part of testing conduit 2; Full-automatic pressuring pump is connected with water filling port 1, and the sinking measuring stick places the lower edge, middle part of testing conduit 2.
Method of testing: testing conduit 2 is lifted to bracing frame 4, according to the size of the diameter adjustment bracing frame 4 of testing conduit 2 and fix; Nominal weight 3 is carried additionally in the precalculated position above testing conduit 2, observes the pipeline deflection from the scale of testing conduit 2 span centres; Apply internal pressure through pressuring pump to testing conduit 2 then, the bearing capacity of testing conduit 2 under interior pressure and bending load acting in conjunction.
Concrete steps are:
1) two end supports frame 4 height 1.5m, bracing frame 4 guarantees that along with testing conduit 2 pivots when crooked testing conduit 2 contact with bracing frame 4 maintenance faces all the time in deformation process, avoid testing conduit 2 and bracing frame 4 contact position generation crimps;
2) testing conduit 2 total lengths are 32m, span 30m between two bracing frames 4, and 1m is respectively extended at two ends, guarantees that there is the transformation safe surplus at testing conduit 2 two ends in settling process, can adjust elongation according to actual conditions;
3) the external load load mode can be selected to concentrate loading or be uniformly distributed with loading according to the test needs for above testing conduit 2, carrying additionally nominal weight 3.
4) full-automatic pressuring pump through being welded on water filling port on the test pipe to testing conduit 2 water fillings, applies internal pressure.
This example is through test of many times, and proving installation is simple, and method of testing is easy, has simulated the true stressing conditions of defective pipeline, has improved pipeline integrity evaluation result accuracy.
Claims (4)
1. in-service pipeline sedimentation analog detection method is characterized in that testing conduit (2) lifting to two bracing frames (4), according to the size of the diameter adjustment bracing frame (4) of testing conduit (2) and fix; Carry additionally nominal weight (3) in precalculated position, testing conduit (2) top, observe the pipeline deflection from the scale of testing conduit (2) span centre; Apply internal pressure through pressuring pump to testing conduit (2) then, the bearing capacity of testing conduit (2) under interior pressure and bending load acting in conjunction.
2. a kind of in-service pipeline sedimentation analog detection method according to claim 1 is characterized in that concrete steps are:
1) the height 1.2-1.5m of two end supports frame (4) pivots when supporting along with pipe bending, guarantees that testing conduit (2) contacts with bracing frame (4) maintenance face in deformation process all the time, avoids testing conduit (2) and bracing frame (4) contact position generation crimp;
2) testing conduit (2) total length is 12m-32m, span 10m-30m between two bracing frames (4), and 0.5m-1m is respectively extended at two ends, guarantees that there is the transformation safe surplus at testing conduit (2) two ends in settling process, can adjust elongation according to actual conditions;
3) the external load load mode can be selected to concentrate loading or be uniformly distributed with loading according to the test needs for carrying additionally nominal weight (3) in testing conduit (2) top;
4) full-automatic pressuring pump through being welded on water filling port (1) on the testing conduit (2) to testing conduit (2) water filling, applies internal pressure.
3. in-service pipeline sedimentation simulating test device that uses the said method of claim 1 is characterized in that it mainly is made up of four parts: bracing frame (4), nominal weight (3), sinking measuring stick, water filling port (1) and full-automatic pressuring pump;
With closed at both ends and at one end have testing conduit (2) that water filling port (1), the other end have a vent valve by two bracing frames (4) in two end supports, at the middle part of testing conduit (2) suspension nominal weight (3); Full-automatic pressuring pump is connected with water filling port (1), and the sinking measuring stick places the lower edge, middle part of testing conduit (2).
4. a kind of in-service pipeline sedimentation simulating test device according to claim 3, the structure that it is characterized in that support frame as described above (4) are that top is arc, and the bottom is a rectangular slab, and each is connected with arc and rectangular slab by the two ends of hinged two sections rectangular columns; Wherein the diameter of arc intrados equates with the external diameter of testing conduit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110124685.7A CN102778395B (en) | 2011-05-13 | 2011-05-13 | In-service pipeline settlement simulation test method and device |
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| CN201110124685.7A CN102778395B (en) | 2011-05-13 | 2011-05-13 | In-service pipeline settlement simulation test method and device |
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| CN102778395A true CN102778395A (en) | 2012-11-14 |
| CN102778395B CN102778395B (en) | 2014-04-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439102A (en) * | 2013-09-02 | 2013-12-11 | 上海开维喜阀门集团有限公司 | Large-scale external load bending test device for pipeline ball valve test |
| CN105571951A (en) * | 2016-01-28 | 2016-05-11 | 无锡华毅管道有限公司 | Internal water pressure and external load combined loading test device and test method for buried rigid pressure pipeline |
| CN109030228A (en) * | 2018-08-20 | 2018-12-18 | 广东工业大学 | A kind of multifunctional pipe forces testing device |
| CN109211679A (en) * | 2018-10-29 | 2019-01-15 | 四川欧宝路管业有限责任公司 | A kind of plastic tube anti-pressure ability test device |
| CN112113849A (en) * | 2020-09-08 | 2020-12-22 | 天津大学 | Method for applying initial defects of submarine pipeline |
| CN113804337A (en) * | 2021-09-15 | 2021-12-17 | 国家石油天然气管网集团有限公司 | Pipeline stress monitoring system and monitoring test method thereof |
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2011
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439102A (en) * | 2013-09-02 | 2013-12-11 | 上海开维喜阀门集团有限公司 | Large-scale external load bending test device for pipeline ball valve test |
| CN105571951A (en) * | 2016-01-28 | 2016-05-11 | 无锡华毅管道有限公司 | Internal water pressure and external load combined loading test device and test method for buried rigid pressure pipeline |
| CN105571951B (en) * | 2016-01-28 | 2018-04-06 | 无锡华毅管道有限公司 | Interior hydraulic pressure and external load the joint bearing test equipment and test method of buried rigid pressure pipeline |
| CN109030228A (en) * | 2018-08-20 | 2018-12-18 | 广东工业大学 | A kind of multifunctional pipe forces testing device |
| CN109211679A (en) * | 2018-10-29 | 2019-01-15 | 四川欧宝路管业有限责任公司 | A kind of plastic tube anti-pressure ability test device |
| CN112113849A (en) * | 2020-09-08 | 2020-12-22 | 天津大学 | Method for applying initial defects of submarine pipeline |
| CN113804337A (en) * | 2021-09-15 | 2021-12-17 | 国家石油天然气管网集团有限公司 | Pipeline stress monitoring system and monitoring test method thereof |
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| CN102778395B (en) | 2014-04-02 |
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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 |