CN107084894A - A kind of deep-sea oil gas pipeline low temperature explosion bulge test device - Google Patents
A kind of deep-sea oil gas pipeline low temperature explosion bulge test device Download PDFInfo
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- CN107084894A CN107084894A CN201710203379.XA CN201710203379A CN107084894A CN 107084894 A CN107084894 A CN 107084894A CN 201710203379 A CN201710203379 A CN 201710203379A CN 107084894 A CN107084894 A CN 107084894A
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- developmental tube
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- cooling bath
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention discloses a kind of deep-sea oil gas pipeline low temperature explosion bulge test device, it includes bulk testing area, external operating space, external operating space is by liquid nitrogen tank car, water pump, water pot, nitrogen pot is constituted, bulk testing area is by liquid nitrogen conveyance conduit, test pipe unit, arch culvert, air accumulator is constituted, safe distance is provided between external operating space and bulk testing area, developmental tube unit horizontal is placed and is fixedly mounted in arch culvert, pipe unit is tested by developmental tube, heat-preservation cylinder, cool down bath cabinet composition, developmental tube is big Welding Thick Pipe, linear weld metal zone is formed in developmental tube joint, priming device is arranged on heat-preservation cylinder, the water and nitrogen of emulation mode are loaded with inside developmental tube, by multiple nozzles, into cooling bath cabinet, the formation cooling bath of injection liquid nitrogen flows into simulation deep sea low temperature environment in heat-preservation cylinder hollow cavity outside developmental tube, new weld seam tear pattern is formed after developmental tube explosion, the Oil/Gas Pipe model for adapting to different deep sea low temperature environment is formulated according to new weld seam tear pattern.
Description
Technical field
The invention belongs to pipeline configuration strength test technical field, and in particular to one kind exists for deep-sea oil gas conveyance conduit
Explosion bulge test device under low temperature.
Background technology
Oil/Gas Pipe is the basis of natural gas transportation, and service condition is severe, generally to bear hundreds of atmospheric pressure internal pressure and
External pressure, hundreds of tons tensile load etc..Oil/Gas Pipe is plate (band) by metallurgic product more special formed by deep processing.Oil gas
Steel pipe demolition accident caused by pipe crack unstable propagation is constantly subjected to concern.But be all mostly by numerical simulation, plate now
Material stress replaces processing to obtain the bursting property of Oil/Gas Pipe, lacks reality and compares, and the explosion cost cost ratio of actual nature
Larger, safety coefficient is very low, causes many research work to go no further.
The content of the invention
There is problem for above-mentioned, the present invention is intended to provide a kind of deep-sea oil gas pipeline low temperature explosion bulge test device, to obtain
The tear pattern when Oil/Gas Pipe cost-effective, that simulation is true and reliable is in explosion in the case of deep sea low temperature is obtained, and is made with this
Determine the Oil/Gas Pipe model for meeting national safety standard corresponding under varying environment (temperature, pressure).
The technical solution adopted for the present invention to solve the technical problems is：A kind of deep-sea oil gas pipeline low temperature explosion bulge test dress
Put, it is characterised in that including external trial zone, bulk testing area, external operating space is main by liquid nitrogen tank car, water pump, water pot, nitrogen
Gas tank is constituted, and bulk testing area is main to be made up of liquid nitrogen conveyance conduit, experiment pipe unit, arch culvert, air accumulator, liquid nitrogen conveying
Pipeline external connection end is connected on the liquid nitrogen tank car in external operating space, and safety is provided between external operating space and bulk testing area
Distance, developmental tube unit horizontal is placed and is fixedly mounted in arch culvert, and experiment pipe unit includes developmental tube, heat-preservation cylinder, cooling
Bath cabinet, developmental tube is big Welding Thick Pipe, and linear weld metal zone is formed at developmental tube axial engagement, and developmental tube side is passed provided with pressure
Sensor, heat-preservation cylinder is enclosed on developmental tube, and its inwall is in close contact with developmental tube, and its outer wall is provided with some access openings, wherein cavity
Body is used to accommodate cooling bath, outer circumference surface of the cooling bath cabinet solid welding in the heat-preservation cylinder first half and containment test pipeline weld metal zone
On, cooling bath cabinet end is provided with temperature sensor, and cooling bath box top is provided with multiple cooling nozzles, and each cooling nozzles top connects
A magnetic valve is connect, magnetic valve can be connected by the liquid nitrogen conveyance conduit liquid nitrogen in-car with liquid nitrogen container, and priming device, which is arranged on, to be protected
On warm cylinder, experiment tube end be connected by forcing hose with air accumulator, the air accumulator other end by bifurcated blending pipe respectively with
Nitrogen pot is connected with water pot；It is loaded with inside developmental tube outside the water and nitrogen of emulation mode, developmental tube by spraying liquid nitrogen
Cooling bath simulation deep sea low temperature environment is formed, developmental tube is formed new weld seam tear pattern, torn according to new weld seam after explosion
Split pattern and formulate the Oil/Gas Pipe model for adapting to different deep sea low temperature environment.
Preferably, heat-preservation cylinder both sides of the present invention are respectively provided with a cooling bath cabinet, each cooling bath box top is provided with 3
Individual cooling nozzles, the priming device is arranged on the heat-preservation cylinder between two cooling bath cabinets.
Further, the water pot bottom is provided with weighing sensor；Between the external operating space and bulk testing area
Safe distance is 100m~300m.
Beneficial effects of the present invention are as follows：
The 1st, two cooling bath cabinets are set respectively in the both sides of developmental tube, deep sea low temperature environment is simulated, control applies different
Low temperature is tested, so as to know that the developmental tube at a temperature of two different tests is broken pattern in an explosion bulge test.
2nd, after target temperature is incubated a period of time, pressurizeed by cylinder to developmental tube, pressure medium is nitrogen and water
Mixture, importing of directly inversely being pressurizeed with certainty ratio mixed gas pressurizes importing, saving into respectively to substitute single substance
On the basis of this, the operating mode that equivalent simulation goes out under actual environment, the temperature of experiment low temperature explosion is coordinated in liquid nitrogen cooling bath cabinet
Realized under magnetic valve Flow-rate adjustment, live temperature adjustment, the external equipment of pressure regulation can in real time be connected, disconnected, it is ensured that explosion bulge test
It is ageing.
3rd, the fracture apperance (fracture length) tested after testing with pressed notch weld seam tear pattern is directly compared,
It can make and meet national safety standard and adapt to the petroleum pipeline model under varying environment.
Brief description of the drawings
Fig. 1 is deep-sea oil gas pipeline low temperature explosion bulge test schematic device.
Fig. 2 be in Fig. 1 experiment pipe unit along line A-A profile.
Fig. 3 is weld seam tear pattern schematic diagram after developmental tube detonation.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
As shown in Fig. 1~2, a kind of deep-sea oil gas pipeline low temperature explosion bulge test device of the embodiment of the present invention is main overall
Trial zone 9, external operating space 15, external operating space 15 are made up of liquid nitrogen tank car 1, water pump 16, water pot 18, nitrogen pot 19, whole
Body trial zone 9 is main to be made up of liquid nitrogen conveyance conduit 2, experiment pipe unit 8, arch culvert 11, air accumulator 13.External operating space 15
Safe distance D1=200mm is provided between bulk testing area 9, to ensure to implement the safety of external environment personnel during explosion bulge test.
Experiment the horizontal positioned of pipe unit 8 be fixedly mounted in arch culvert 11, experiment pipe unit include developmental tube 24, cooling bath cabinet 21,
Heat-preservation cylinder 23, heat-preservation cylinder 23 is enclosed on developmental tube, and heat-preservation cylinder inwall is in close contact with developmental tube, and outer wall is provided with several passages
Hole 28, the hollow cavity of incubator is used to accommodating liquid nitrogen cooling bath, two cooling solid weldings of bath cabinet 21 in the first half of heat-preservation cylinder 23 and
On the outer circumference surface of containment test pipeline weld metal zone 27,3 cooling nozzles 20, cooling nozzles are installed in each cooling bath box top
Liquid nitrogen is sprayed onto in cooling bath cabinet 21 and forms cooling bath 22 by 20 through access opening 28, afterwards by several passages 28 by cooling bath 22
Into in the hollow cavity of heat-preservation cylinder 23, each top ends of cooling nozzles 20, which is set, is connected with magnetic valve 5, each electromagnetism
The end of valve 5, which is all connected at the top of the end of liquid nitrogen conveyance conduit 2, the two ends of the level of liquid nitrogen conveyance conduit 2, to be mounted on emptying pipeline
3, priming device 10 is arranged on the heat-preservation cylinder 23 between two cooling bath cabinets 21, and the one end of developmental tube 24 is connected with forcing hose
12, the other end of forcing hose 12 is connected to the side of air accumulator 13, and the other end of air accumulator 13 is connected with bifurcated blending pipe 14, bifurcated
Blending pipe 14 one end is connected on the nitrogen pot 19 in external operating space 15, and the other end is connected to the water pump in external operating space 15
On 16, the other end pipeline of water pump 16 is connected on water pot 18, and the bottom of water pot 18 is provided with weighing sensor 17.Liquid nitrogen conveyance conduit
2 external connection ends are connected on the liquid nitrogen tank car 1 in external operating space 15, and two cooling bath cabinet 21 ends are mounted on can real time temperature measurement
Temperature sensor 7, the end of developmental tube 24 be connected with can pressure measurement in real time pressure sensor 6, be loaded with mould inside developmental tube 24
The water 25 of plan state and the nitrogen 26 of gas form.
In deep-sea oil gas pipeline low temperature explosion bulge test, mainly include the peace of the grade device of 11 closed test pipe of arch culvert 24
Indirectly simulation gas pressure controlling device and data (temperature, pressure, the explosion tear form) test of dress combination, external operating space 15
Harvester, the working-flow that its explosion bulge test is realized is as follows：
The experiment horizontal positioned of pipe unit 8 is fixedly mounted in arch culvert 11, the top of both sides cooling bath cabinet 21 uniformly connects
Cooling nozzles 20 are connected to, each top ends of cooling nozzles 20, which is set, is connected with magnetic valve 5, by controlling in cooling nozzles 20
The temperature come in Control experiment pipe 24 of liquid nitrogen flow, each end of magnetic valve 5 is connected to the end of liquid nitrogen conveyance conduit 2.
The low-temperature condition inside developmental tube two ends can be adjusted in real time by cooling down liquid nitrogen refrigerating in bath cabinet, and once experiment directly simulates two
Plant the blasting from of Different hypothermia.It is mounted on emptying pipeline 3 at the top of the two ends of the level of liquid nitrogen conveyance conduit 2, can arranges in advance
Except the complicated gas inside developmental tube 24, the external connection end of liquid nitrogen conveyance conduit 2 is connected to the liquid nitrogen tank car 1 in external operating space 15
On, the low temperature of simulation is adjusted by liquid nitrogen, its cooling effect, low temperature keep effect, explosion bulge test accuracy all to obtain greatly
Improve.
The one end of developmental tube 24 is connected with forcing hose 12, and the other end of forcing hose 12 is connected to the side of air accumulator 13, gas storage
The other end of tank 13 is connected with bifurcated blending pipe 14, and its one end is connected on the nitrogen pot 19 in external operating space 15, the other end
It is connected on the water pump 16 in external operating space 15, the other end pipeline of water pump 16 is connected on water pot 18, the bottom of water pot 18 is installed
There is weighing sensor 17, the water 25 from water pot 18, water pump 16 coordinates the gas conveying of nitrogen pot 19 to be formed in blending pipe 14
Mixing, can carry out regulation accurate in scale, nitrogen and water mixed proportion are about 1：5, finally enter in air accumulator 13, by adding
Internal mix aerosol is pressed into developmental tube by pressure flexible pipe 12, real environment under controllability simulated interior oil-gas transportation pressure,
Using nitrogen and water as main component, the cost of explosion bulge test is greatly reduced, nitrogen sheet is as inert gas, it is ensured that quick-fried
The security of broken experiment early stage.
Two ends cooling bath cabinet 21 end be mounted on can real time temperature measurement temperature sensor 7, the connection of the end face side of developmental tube 24
Have can pressure measurement in real time pressure sensor 6, be loaded with the water 25 of emulation mode and the nitrogen of gas form inside developmental tube 24
26, pass through temperature sensor 7, the temperature of the output of pressure sensor 6, pressure data, experiment institute feedback information：One is control electromagnetism
Liquid nitrogen flow cools down low temperature in bath cabinet to demarcate in valve, regulation cooling nozzles；Two be air accumulator by forcing hose come reverse defeated
It is sent to inside developmental tube, it is strong to adjust internal mode mimicry standard oil air pressure.
Set after the completion of work, ignite the priming device 10 being arranged on heat-preservation cylinder 23 and carry out explosive test, when explosion is complete
Cheng Hou, as shown in figure 3, the explosion under the both sides Different hypothermia of developmental tube 24, its weld metal zone 27 forms new weld seam tear pattern (such as
In Fig. 3 shown in dotted line), research contents is mainly fracture length D2 and D3, tear angle, θ 1 and θ 2 in weld seam tear pattern, comes true
Fixed its crack velocity, fracture path etc., make and meet national safety standard and adapt to the oil transportation cast under varying environment accordingly
Number.
The present invention preferably embodiment is these are only, but protection scope of the present invention is not limited thereto, it is any
Those familiar with the art is in the technical scope of present disclosure, technique according to the invention scheme and its design
Design equivalent replacement or change, should all cover within the protection domain of claims of the present invention.
Claims (4)
1. a kind of deep-sea oil gas pipeline low temperature explosion bulge test device, it is characterised in that including external trial zone, bulk testing area,
External operating space is mainly made up of liquid nitrogen tank car, water pump, water pot, nitrogen pot, and bulk testing area is main by liquid nitrogen conveyance conduit, examination
Pipe unit, arch culvert, air accumulator composition are tested, liquid nitrogen conveyance conduit external connection end is connected to the liquid nitrogen tank car in external operating space
On, safe distance is provided between external operating space and bulk testing area, developmental tube unit horizontal is placed and is fixedly mounted on arch
In culvert, experiment pipe unit includes developmental tube, heat-preservation cylinder, cooling bath cabinet, and developmental tube is big Welding Thick Pipe, is axially connect in developmental tube
Linear weld metal zone is formed at conjunction, developmental tube side is provided with pressure sensor, and heat-preservation cylinder is enclosed on developmental tube, its inwall and developmental tube
It is in close contact, its outer wall is provided with some access openings, its hollow cavity is used to accommodate cooling bath, and cooling bath cabinet solid welding is on heat-preservation cylinder
On the outer circumference surface of half portion and containment test pipeline weld metal zone, cooling bath cabinet end is provided with temperature sensor, cooling bath cabinet top
Portion is provided with multiple cooling nozzles, and each cooling nozzles top connects a magnetic valve, magnetic valve can by liquid nitrogen conveyance conduit with
The in-car liquid nitrogen connection of liquid nitrogen container, priming device is arranged on heat-preservation cylinder, and experiment tube end passes through forcing hose and air accumulator phase
Connection, the air accumulator other end is concocted pipe by bifurcated and is connected respectively with nitrogen pot and water pot；Simulation is loaded with inside developmental tube
Deep sea low temperature environment is simulated by spraying liquid nitrogen formation cooling bath outside the water and nitrogen of state, developmental tube, developmental tube is by explosion
New weld seam tear pattern is formed afterwards, and the oil gas cast for adapting to different deep sea low temperature environment is formulated according to new weld seam tear pattern
Number.
2. a kind of deep-sea oil gas pipeline low temperature explosion bulge test device according to claim 1, it is characterised in that the insulation
Cylinder two ends are respectively provided with a cooling bath cabinet, and each cooling bath box top is arranged on two provided with 3 cooling nozzles, the priming device
On heat-preservation cylinder between individual cooling bath cabinet.
3. a kind of deep-sea oil gas pipeline low temperature explosion bulge test device according to claim 1, it is characterised in that the water pot
Bottom is provided with weighing sensor.
4. a kind of deep-sea oil gas pipeline low temperature explosion bulge test device according to claim 1, it is characterised in that described external
Safe distance between operating space and bulk testing area is 100m~300m.
Priority Applications (1)
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| CN201710203379.XA CN107084894B (en) | 2017-03-30 | 2017-03-30 | A kind of deep-sea oil gas pipeline low temperature explosion bulge test device |
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| CN201710203379.XA CN107084894B (en) | 2017-03-30 | 2017-03-30 | A kind of deep-sea oil gas pipeline low temperature explosion bulge test device |
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| CN107084894A true CN107084894A (en) | 2017-08-22 |
| CN107084894B CN107084894B (en) | 2019-06-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462461A (en) * | 2017-08-29 | 2017-12-12 | 山东省产品质量检验研究院 | A kind of transportable fire extinguisher jet hose component blasting experiment device |
| CN108051321A (en) * | 2017-12-20 | 2018-05-18 | 广东核电合营有限公司 | A kind of cladding tubes internal pressure explosion bulge test device and its test method |
| CN109163978A (en) * | 2018-09-03 | 2019-01-08 | 中国石油天然气集团有限公司 | Low temperature gas transmission pipe bearing capacity and ductile-brittle transiton behavior full-scale test method |
| CN110057658A (en) * | 2019-04-22 | 2019-07-26 | 龙源 | The cooling device and method of half gas low temperature high-pressure metal pipe explosion bulge test of heavy caliber |
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| CN105004616A (en) * | 2015-06-07 | 2015-10-28 | 大连理工大学 | Cryogenic vessel multi-performance test device and test method |
| CN205719785U (en) * | 2016-06-28 | 2016-11-23 | 山东科技大学 | A kind of actual triaxial testing apparatus for simulating crack propagation |
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| CN101236138A (en) * | 2008-03-06 | 2008-08-06 | 浙江大学 | Hydrogen storing container hydrogen environment fatigue test system |
| JP2009264777A (en) * | 2008-04-22 | 2009-11-12 | Kobe Steel Ltd | Measuring instrument of mechanical characteristics under high-pressure hydrogen gas atmosphere, and measuring method of mechanical characteristics under high-pressure hydrogen gas atmosphere using it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109163978A (en) * | 2018-09-03 | 2019-01-08 | 中国石油天然气集团有限公司 | Low temperature gas transmission pipe bearing capacity and ductile-brittle transiton behavior full-scale test method |
| CN109163978B (en) * | 2018-09-03 | 2021-01-29 | 中国石油天然气集团有限公司 | Full-scale test method for pressure-bearing capacity and ductile-brittle transition behavior of low-temperature gas transmission steel pipe |
| CN110057658A (en) * | 2019-04-22 | 2019-07-26 | 龙源 | The cooling device and method of half gas low temperature high-pressure metal pipe explosion bulge test of heavy caliber |
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| Publication number | Publication date |
|---|---|
| CN107084894B (en) | 2019-06-25 |
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Effective date of registration: 20200722 Address after: Chengxiang city Taicang town Suzhou city Jiangsu province 215400 000 Honghua court room 2 A25 Patentee after: TAICANG JIJING MACHINERY Co.,Ltd. Address before: Hebei Street West Harbor area, 066004 Hebei city of Qinhuangdao province No. 438 Patentee before: Yanshan University |