CN206399619U - A kind of LNG ship insulated case pressure-bearing testing device - Google Patents
A kind of LNG ship insulated case pressure-bearing testing device Download PDFInfo
- Publication number
- CN206399619U CN206399619U CN201621443388.3U CN201621443388U CN206399619U CN 206399619 U CN206399619 U CN 206399619U CN 201621443388 U CN201621443388 U CN 201621443388U CN 206399619 U CN206399619 U CN 206399619U
- Authority
- CN
- China
- Prior art keywords
- insulated case
- cushion pad
- lng ship
- top board
- pressure
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of LNG ship insulated case pressure-bearing testing device, the device includes lower platen and top board, the length of the lower platen is more than the length of top board, the first cushion pad is laid with the lower platen, insulated case is placed with first cushion pad, the second cushion pad is laid in the insulated case upper surface, pressure head is placed on second cushion pad, two displacement transducers are respectively mounted in two sides of top board, the wire of each displacement transducer is connected to strain signal collector in sequence, displacement transducer transmits distance and time signal to corresponding strain signal collector.The utility model passes through LNG ship insulated case pressure-bearing test method, gather power displacement curve and strain data, the correctness of insulated case Theoretical Design is verified with this, the theoretical curve of insulated case design is obtained simultaneously, not only reduce design cost, and design schedule and insulated case manufacturing time are significantly improved, it further shorten LNG ship construction period.
Description
Technical field
The utility model is related to LNG ship insulated case pressure-bearing experimental technique field, and particularly a kind of LNG ship is held with insulated case
Compression testing device.
Background technology
LNG ship is the jewel in shipbuilding industry, builds difficulty well-known.According to the state of the art of domestic shipyard, it is necessary to
The construction difficult point of breakthrough is very more, and it is exactly one of which that liquid goods containment system, which is built,.Insulated case is the core of liquid goods containment system
One of part, still, the design work of insulated case are all completed by offshore company, and the country is complete without shipyard and designing unit
The design of insulated case is grasped, initiative nearly all rests in design abroad company.Now, shipbuilding industry competition is more and more fierce, often
Family's shipyard is all in constantly reduction shipbuilding cost and compression shipbuilding period, if the Theoretical Design of insulated case can not be grasped completely,
Production and the installation progress of insulated case are not only had a strong impact on, whole shipbuilding period also cannot further shorten, construction cost
Also it can not reduce.
Because LNG ship is operated under ultra-low temperature surroundings with insulated case, it is necessary to which the project detected is very more, and FCL pressure-bearing is tried
It is most important of which detection project to test, and only detects data qualifier, just can prove that the correctness of insulated case design.According to investigation
It was found that, the country there is no the related data on LNG ship insulated case pressure-bearing testing device and test method.
The content of the invention
For problems of the prior art, the utility model provides a kind of LNG ship insulated case pressure-bearing testing device,
Correctness, security and the reliability used of insulated case design are able to verify that, while the theoretical curve of insulated case design is obtained,
Many specifications, the demand of mass insulated case manufacture can be met.
To achieve the above object, the utility model uses following technical scheme：
A kind of LNG ship insulated case pressure-bearing testing device, the device includes lower platen and top board, the length of the lower platen
Degree is laid with the first cushion pad, the first cushion pad on the lower platen more than the length of top board and is placed with insulated case,
The insulated case upper surface is laid and places pressure head on the second cushion pad, the second cushion pad,
Two displacement transducers are respectively mounted in two sides of top board, the wire of each displacement transducer is in sequence
Strain signal collector is connected to, displacement transducer transmits distance and time signal to corresponding strain signal collector.
Institute's displacement sensors are fixed on the both sides of top board by magnetic means.
The stroke range of institute's displacement sensors is 0-200mm, and precision is 0.01mm.
The tensile strength of first cushion pad is 10MPa, and the disconnected long rate of stretching is 400%, and shore a hardness is H5, and thickness is
10mm。
The tensile strength of second cushion pad is 10MPa, and the disconnected long rate of stretching is 400%, and shore a hardness is H5, and thickness is
10mm。
A kind of LNG ship test method of insulated case pressure-bearing testing device, comprises the following steps,
The first step, top board is linked together by the upper mounting plate of bolt and testing machine, and lower platen passes through bolt and examination
The lower platform for testing machine is fixed together,
Second step, the first cushion pad is placed on lower platen, and insulated case then is rested easily within into the first cushion pad
On,
3rd step, the pressure head that selection is adapted with insulated case bearing capacity, will put with the cushion pad of indenter area identical second
Put in insulated case pressure-bearing pilot region, then again rest easily within pressure head on the second cushion pad,
4th step, four displacement transducers is fixed on by magnetic means respectively two sides of top board, each side
Face is respectively mounted two displacement transducers, after installing, position and distance between adjustment top board and insulated case, makes four
The probe of displacement transducer is completely attached to lower platen,
5th step, first, mobile pressure head carry out precompressed once, make insulated case respectively with the first cushion pad, the second cushion pad
Laminating, then unloads insulated case completely,
Power is evenly applied in insulated case by the 6th step, firing test machine, mobile pressure head, when uniform load is applied to absolutely
During edge case, insulated case can produce corresponding deformation, and strain signal collector records the compress variation of insulated case, obtains one automatically
Group force-displacement curve s1, according to force-displacement curve balance principle, is evenly loaded into ordinance load, if load is no longer by power
Rise, and insulated case produces crack, then load is offloaded into zero, this off-test, each bearing area of insulated case enters
5 experiments of row,
7th step, the data on four groups of force-displacement curve s1 that will be gathered by four displacement transducers carry out statistical
Analysis, obtains one group of time-displacement curve s2, is then merged with force-displacement curve s1, obtain a power-displacement being combined into
Curve s3,
8th step, according to insulated case 5 test datas of each bearing area, takes every on the force-displacement curve s3 of synthesis
5 limiting damage load, are then carried out average computation by the greatest limit breaking load of secondary experiment, and calculation formula is as follows：, whereinFor:A kind of ultimate pressure average value of bearing area of insulated case, obtains insulated case
Bearing area-number pressure strong point；Using insulated case bearing area as abscissa, using ultimate pressure as ordinate, repeat 8 kinds not
With bearing area experiment, 8 groups of bearing areas-number pressure strong point is obtained, according to 8 groups of effective test datas, selection generation nothing
Curve scatter diagram, then increases Trendline, and Trendline uses logistic fit mode, and insulated case design is fitted by regression analysis
Theoretical curve s4, formula is as follows：。
Pre-pressing stage in 5th step, the translational speed of pressure head is 6-60mm/min.
The translational speed of pressure head is 3-6mm/min in 6th step.
Compared with prior art, the beneficial effects of the utility model are：
1. the utility model gathers force-displacement curve and strain data by LNG ship insulated case pressure-bearing test method,
The correctness of insulated case Theoretical Design is verified with this, while the theoretical curve of insulated case design is obtained, in production design
According to theory curve, it can rapidly design different size and the insulated case drawing of size, it is to avoid design iterations and checking
Work, not only reduces design cost, and significantly improves design schedule and insulated case manufacturing time, further shorten
LNG ship construction period；2. by authority's calculating of the relevant departments such as design, the irregular insulated case section that can be used for every ship
About 100,000 yuan or so of design charges.The utility model is in order to verify the correctness and reasonability of insulated case design, and according to examination
Data creating insulated case design theory curve is tested, pressure-bearing test method has been worked out, and according to test method, devises a set of pressure-bearing
Experimental rig.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is use state figure of the present utility model.
The curve map that Fig. 3 is s1 in the utility model.
The curve map that Fig. 4 is s2 in the utility model.
The curve map that Fig. 5 is s3 in the utility model.
The tendency distribution map that Fig. 6 is insulated case design theory curve s4 in the utility model.
Embodiment
Embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings.
As shown in Fig. 1,2,3,4,5 and 6, the present embodiment LNG ship insulated case pressure-bearing testing device, the device includes pushing
Plate 1 and top board 2, the length of the lower platen 1 are more than the length of top board 2, and the first buffering is laid with the lower platen 1
Insulated case 4 is placed with pad 3, the first cushion pad 3, the second cushion pad 5, the second cushion pad 5 are laid in the upper surface of insulated case 4
Upper placement pressure head 6,
Be respectively mounted two displacement transducers 7 in two sides of top board 2, the wire of each displacement transducer 7 according to
Order is connected to strain signal collector, and distance and time signal are transmitted to corresponding strain signal and gathered by displacement transducer
Device, the strain signal collector is high speed static strain data Acquisition Instrument, unit type：DH3820, equipment precision：Full scale value ±
50000με；The μ ε of minimum resolution 0.5.
Preferably, the displacement transducer 7 used in the present embodiment is litter formula displacement transducer, unit type：NS-
WY02, the displacement transducer 7 is fixed on the both sides of top board 2 by magnetic means；The stroke range of the displacement transducer 7 is 0-
200mm, precision is 0.01mm.
As further preferred, the tensile strength of the first cushion pad of the present embodiment 3 is 10MPa, and stretching long rate of breaking is 400%,
Shore a hardness is H5, and thickness is 10mm；The tensile strength of second cushion pad 5 is 10MPa, and stretching breaks long rate for 400%, Shao Er A
Hardness is H5, and thickness is 10mm.
The present embodiment LNG ship test method of insulated case pressure-bearing testing device, comprises the following steps,
The first step, top board 2 is linked together by the upper mounting plate 8 of bolt and testing machine, lower platen 1 by bolt with
The lower platform 9 of testing machine is fixed together, the testing machine that the present embodiment is used for microcomputer-controlled electro-hydraulic servo load-shear, if
Standby model：YAW-20000J, equipment precision：Dbase in 0.1kN, the testing machine：YAW control softwares,
Second step, the first cushion pad 3 is placed on lower platen 1, insulated case 4 then is rested easily within into the first buffering
On pad 3,
3rd step, the pressure head 6 that selection is adapted with insulated case bearing capacity, will be with the second cushion pad of area identical 5 of pressure head 6
Insulated case pressure-bearing pilot region is placed on, then again rests easily within pressure head 6 on second cushion pad 5,
4th step, four displacement transducers 7 is fixed on by magnetic means respectively two sides of top board 2, each
Side is respectively mounted two displacement transducers, after installing, position and distance between adjustment top board 2 and insulated case 4, makes
The probe of four displacement transducers 7 is completely attached to lower platen 1,
5th step, first, mobile pressure head carry out precompressed once, insulated case 4 is buffered respectively with the first cushion pad 3, second
Pad 5 is fitted completely, then unloads insulated case 4,
Power is evenly applied in insulated case 4 by the 6th step, firing test machine, mobile pressure head, when uniform load is applied to
During insulated case, insulated case can produce corresponding deformation, and strain signal collector records the compress variation of insulated case, obtained automatically
One group of force-displacement curve s1（As shown in Figure 3）, according to force-displacement curve balance principle, power is evenly loaded into regulation and carried
Lotus, if load no longer rises, and insulated case produces crack, then load is offloaded into zero, this off-test,
7th step, the data on four groups of force-displacement curve s1 that will be gathered by four displacement transducers carry out statistical
Analysis, obtains one group of time-displacement curve s2（As shown in Figure 4）, then merged with force-displacement curve s1, obtain a combination
Into force-displacement curve s3（As shown in Figure 5）,
8th step, according to insulated case 5 test datas of each bearing area, takes every on the force-displacement curve s3 of synthesis
5 limiting damage load, are then carried out average computation by the greatest limit breaking load of secondary experiment, and calculation formula is as follows：, whereinFor:A kind of ultimate pressure average value of bearing area of insulated case, obtains insulated case
Bearing area-number pressure strong point；Using insulated case bearing area as abscissa, using ultimate pressure as ordinate, repeat 8 kinds not
With bearing area experiment, 8 groups of bearing areas-number pressure strong point is obtained, according to 8 groups of effective test datas, selection generation nothing
Curve scatter diagram, then increases Trendline, and Trendline uses logistic fit mode, and insulated case design is fitted by regression analysis
Theoretical curve s4（As shown in Figure 6）, formula is as follows：。
As still more preferably, pre-pressing stage in the 5th step described in the present embodiment, the translational speed of pressure head is 6-60mm/
min；The translational speed of pressure head is 3-6mm/min in 6th step.
Above example is only to illustrate the technical solution of the utility model rather than its limitations；Although with reference to preferable implementation
The utility model is described in detail example, those of ordinary skills in the art should understand that；Still can be to this reality
Modified with new embodiment or equivalent substitution is carried out to some technical characteristics；Without departing from the utility model
The spirit of technical scheme, it all should cover among the claimed technical scheme scope of the utility model.
Claims (5)
1. a kind of LNG ship insulated case pressure-bearing testing device, it is characterised in that the device includes lower platen（1）And top board
（2）, the lower platen（1）Length be more than top board（2）Length, in the lower platen（1）On be laid with the first cushion pad
（3）, the first cushion pad（3）On be placed with insulated case（4）, in the insulated case（4）Lay the second cushion pad in upper surface（5）, the
Two cushion pads（5）Upper placement pressure head（6）, in top board（2）Two sides be respectively mounted two displacement transducers（7）, each
Displacement transducer（7）Wire be connected to strain signal collector in sequence, displacement transducer passes distance and time signal
Transport to corresponding strain signal collector.
2. LNG ship according to claim 1 insulated case pressure-bearing testing device, it is characterised in that institute's displacement sensors
（7）Top board is fixed on by magnetic means（2）Both sides.
3. LNG ship according to claim 2 insulated case pressure-bearing testing device, it is characterised in that institute's displacement sensors
（7）Stroke range be 0-200mm, precision is 0.01mm.
4. LNG ship according to claim 1 insulated case pressure-bearing testing device, it is characterised in that first cushion pad
（3）Tensile strength be 10MPa, stretching break long rate be 400%, shore a hardness is H5, and thickness is 10mm.
5. LNG ship according to claim 1 insulated case pressure-bearing testing device, it is characterised in that second cushion pad
（5）Tensile strength be 10MPa, stretching break long rate be 400%, shore a hardness is H5, and thickness is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443388.3U CN206399619U (en) | 2016-12-27 | 2016-12-27 | A kind of LNG ship insulated case pressure-bearing testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443388.3U CN206399619U (en) | 2016-12-27 | 2016-12-27 | A kind of LNG ship insulated case pressure-bearing testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206399619U true CN206399619U (en) | 2017-08-11 |
Family
ID=59511819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621443388.3U Active CN206399619U (en) | 2016-12-27 | 2016-12-27 | A kind of LNG ship insulated case pressure-bearing testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206399619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768747A (en) * | 2016-12-27 | 2017-05-31 | 沪东中华造船(集团)有限公司 | A kind of LNG ship insulated case pressure-bearing testing device and test method |
-
2016
- 2016-12-27 CN CN201621443388.3U patent/CN206399619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768747A (en) * | 2016-12-27 | 2017-05-31 | 沪东中华造船(集团)有限公司 | A kind of LNG ship insulated case pressure-bearing testing device and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106503292B (en) | Predict the finite element method of the progressive failure of Laminated Composites Under Low Velocity Impact Loading | |
| Mania et al. | Comparative study of FML profiles buckling and postbuckling behaviour under axial loading | |
| CN106950280B (en) | Fibre reinforced composites parameter identification method based on the lossless scanning of laser | |
| US20210156775A1 (en) | Stress gradient loading test apparatus and method of accurately determining loading energy | |
| CN201876396U (en) | Measuring device of static normal direction contact stiffness of junction plane | |
| CN110133101B (en) | Degradation analysis method for high-temperature dynamic performance of fiber-reinforced composite plate | |
| CN104344993B (en) | Method for testing and measuring member bearing capacity and material performance parameters | |
| WO2018157734A1 (en) | Three-directional motion decoupling periodic structure for vibration table mould box | |
| CN205027605U (en) | Rock unipolar compression test device under stress, temperature and vibration coupling | |
| CN106124313B (en) | Concrete and similar material are by the test device for depressing comprehensive deformation performance | |
| CN103149002A (en) | Testing device and method of normal dynamic characteristic parameter of combination face | |
| Xu et al. | Experimental and theoretical study on a novel multi-dimensional vibration isolation and mitigation device for large-scale pipeline structure | |
| CN206399619U (en) | A kind of LNG ship insulated case pressure-bearing testing device | |
| CN206348142U (en) | Double-wall pipe elastic support dynamic fatigue test device | |
| CN203811459U (en) | Static load test device for concrete beam | |
| Mei et al. | Study on flexural performance of prestressed glulam continuous beams under control influence | |
| CN205642774U (en) | Vibration test analogue means of drilling derrick and base system | |
| CN106768747A (en) | A kind of LNG ship insulated case pressure-bearing testing device and test method | |
| Liu et al. | Stress around the hole of single lapped and single bolted joint plates with fitting clearance | |
| CN106124319A (en) | Moment of flexure active control experiment system and method | |
| Karvelas et al. | Mechanical response of an industrial piping system under strong cyclic loading | |
| CN109992926B (en) | Bearing outer ring defect angle position quantitative evaluation method | |
| CN107449495B (en) | A kind of ocean platform measurement method based on indentation method | |
| Askaripour et al. | Diagnosis of delaminated composites using post-processed strain measurements under impact loading | |
| Sun et al. | Buckling failure analysis of hydraulic cylinder rod on the flap institutions for power catwalk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |