CN106679533A - Testing tool system and testing method for LNG ship liquid cargo compartment three-dimensional board CM nodes - Google Patents
Testing tool system and testing method for LNG ship liquid cargo compartment three-dimensional board CM nodes Download PDFInfo
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- CN106679533A CN106679533A CN201611223021.5A CN201611223021A CN106679533A CN 106679533 A CN106679533 A CN 106679533A CN 201611223021 A CN201611223021 A CN 201611223021A CN 106679533 A CN106679533 A CN 106679533A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Abstract
The invention discloses a testing tool system for LNG ship liquid cargo compartment three-dimensional board CM nodes. The testing tool system comprises an inner clamping template and an outer clamping template. The inner clamping template is used for aligning the LNG ship liquid cargo compartment three-dimensional board CM node. The outer clamping template is used for verifying in a CM node verification stage after welding of the LNG ship liquid cargo compartment three-dimensional board CM node. The three-dimensional board comprises a transverse board, a vertical board and an oblique board. An included angle between the transverse board and the oblique board is alpha. A first reference line which is perpendicular with the transverse board is engraved on the transverse board. A second reference line which is perpendicular with the vertical board is engraved on the vertical board. According to the testing tool system, testing templates which matches the three-dimensional board are utilized. The testing templates comprise the inner clamping template for quick assembling and loading, thereby ensuring high precision and high stability in assembly. The testing templates further comprise the outer clamping template for after-welding verification. For ensuring high accuracy in final state measurement, the specialized outer clamping template is utilized, thereby truly testing the final deviation of each node.
Description
Technical field
The invention belongs to LNG ship cargo hold sectional construction field, and in particular to one kind was carried for sectional construction and total group
The detecting tool system and detection method of the LNG ship cargo tank three-dimensional plate CM nodes of the test template for master node of ship hull assembling work in journey, pin
Interior card model and wild card model are respectively provided with to each node, and two kinds of models are used cooperatively, realize rapid construction and accurate
Inspection.
Background technology
It is well known that the cost of LNG ship is sufficiently expensive, therefore shipowner is very high to the use fatigue life requirements of LNG ship, one
As for 40 years North Atlantic Oceans fatigue life, but the requirement of 50 years North Atlantic Oceans in recent years is also of common occurrence.To ensure ship
Superelevation fatigue life finally meets design requirement, it is necessary to three-dimensional grillage assembling and welding process in its Molded Line pair in carry out
Strict monitoring and inspection, it is ensured that its centerline deviation in tolerance interval, so as to ensure fatigue life.
The crucial focus of LNG ship fatigue life is mainly distributed at the intersecting node of cargo tank inner casing three-dimensional grillage, such as Fig. 1
It is shown, it is symmetrical to amount to eight nodes（Number node, No. two nodes, No. three nodes and No. four nodes）, and each node is equal
Through whole cargo area, by taking the LNG ship of 170000M3 levels as an example, node's length is a total of about 1600 meters, the typical case of each node
As shown in Fig. 2 the three-dimensional plate includes transverse plate, vertical plate and swash plate, the thickness of transverse plate, vertical plate and swash plate is respectively detail drawing
T3, t1 and t2, are the fatigue life for ensureing each node to meet design requirement, although required according to classification society, margin of tolerance value
A is necessarily less than 1/3rd of minimum thickness of slab in grillage t1, grillage t2, grillage t3, and maximum no more than 5mm, but shipowner is
Ensure that new shipbuilding oceangoing ship fatigue life is long as far as possible, it will usually require margin of tolerance value a be necessarily less than minimum thickness of slab four/
One.In being commonly designed, three pieces of plate minimum thicknesss of slab are typically only 12mm, therefore centerline deviation value no more than 3mm, it can be seen that
The height of assembly precision requirement.If the mode rule according to live snap the line is assembled, checked and corrected, at the scene building course
In, by conventional meanses it is difficult to directly confirm the position of three-dimensional grillage center line and assembled or checked, workload is very
It is huge.
The content of the invention
For problems of the prior art, the present invention provides a kind of for LNG ship cargo tank three-dimensional plate CM nodes
Detecting tool system and detection method, the present invention is used cooperatively using the model of two kinds of forms, and in different phase not similar shape is used
The model of formula, realizes detection intuitive and accurate to end-state, simplifies technological process.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes, the detecting tool system includes interior card model
With wild card model, the interior card model be used for LNG ship cargo tank three-dimensional plate assembling stage CM nodes centering, the wild card model
For the verification of CM node testing stages after LNG ship cargo tank three-dimensional plate weld, the three-dimensional plate include transverse plate, vertical plate and
Swash plate, the angle between the transverse plate and swash plate is α, and first datum line perpendicular with transverse plate is carved with transverse plate,
Second datum line perpendicular with vertical plate is carved with vertical plate.
The interior card model is the structure fastened with three-dimensional plate inner side, and the interior card model includes the first hypotenuse and first
Right-angle side, the angle between first hypotenuse and the first right-angle side is β, and between β the and α angles supplementary angle each other, in interior card sample
The first inspection line is carved with plate, described first checks line with the first datum line same after interior card model fastens with three-dimensional plate inner side
On straight line, in the drift angle of interior card model clearance hole is provided with.
The precision controlling value of the interior card model is L1, and the L1 is between the inspection lines of the summit Y of interior card model and first
Horizontal range, the distance between first datum line and vertical plate inner side Molded Line is d, the L1=d+1/2（t1+t3/
Tan α ﹣ t2/sin α）.
The wild card model is and the structure that fastens of three-dimensional plate outside, and the wild card model is c-type structure, the wild card
Model includes the second hypotenuse, the second right-angle side and c-type side, and the angle between second hypotenuse and the second right-angle side is γ, institute
γ=90 °+α is stated, the second inspection line is provided with the wild card model, wild card model with three-dimensional plate outside described the after fastening
Two inspection lines and the second datum line are provided with through hole on same straight line at the drift angle of the wild card model.
Include M points, N points and Q points on the through hole, the distance between the M points and N points are e, between M points and Q points
Distance is a, and the Q points to the vertical range between the second inspection line are b, the lower limb of second datum line to transverse plate it
Between vertical range be c, the precision controlling value of the wild card model is L2, and the L2 is vertical between N points and the second hypotenuse
Distance, L2=a × sin α-（e+b-c）×cosα+1/2（T1 × sin α+t3 × cos α ﹣ t2）.
The α is 0 °~180 °.
The α is 30 °~150 °.
A kind of detection method of the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes, it is characterised in that bag
Include following steps：
Step 1, in three-dimensional plate assembling stage, according to hull construction table is monitored, and the three-dimensional plate phase with required centering is chosen by number
The interior card model of matching,
Step 2, will fasten on the inside of interior card model and three-dimensional plate, the first right-angle side is closely pasted with the Molded Line of transverse plate
Close, then the first inspection line align with the first datum line,
Step 3, by the inner side Molded Line and the first hypotenuse of swash plate in the transverse plate, vertical plate and swash plate assembling process in three-dimensional plate
It is brought into close contact, completes the assembling of three-dimensional plate and the centering of three-dimensional plate CM nodes；
Step 4, the checking stage of CM nodes testing stage, wild card model is mutually blocked with the outside of three-dimensional plate after three-dimensional plate weld
Close, the second inspection line is aligned with the second datum line, if the second hypotenuse of wild card model is tight with the outside Molded Line of swash plate
The vertical outside Molded Line of laminating, the second right-angle side and vertical plate is brought into close contact, and shows that three-dimensional plate CM centerline nodes are completely right
In；Cannot fit if any one side, then the gap between the border of wild card model and three-dimensional plate be measured by clearance gauge, gap width is being wanted
Within the scope of asking；If gap width is not within allowed band, to be corrected and repairing work, until gap width meets
Tolerance.
The first inspection line is marked in the process segment of interior card model in its two sides numerical control；In school after the completion of three-dimensional plate weld
Measuring surface is tested, live snap the line marks the second datum line.
It is precision controlling value L1 of interior card model, precision controlling value L2 of wild card model and node angle in the present invention, related
The thickness of three-dimensional plate grillage is relevant；Angle α in the present invention between transverse plate and swash plate can be in theory 0 °~180 °, but work
In journey during practical application, it is contemplated that assembling and weld space, the angular range general control between 30 °~150 °, for example
NO.96 type LNG ship node angles α is 45 °, corresponding modification during real ship application, and the interior card model being similar to using structure with
Wild card model is assembled to the inspection after neutralization welding.
Compared with prior art, beneficial effects of the present invention are：
1. the present invention eliminates model body dimension and is not precisely brought according to different situations using the card model of multi-form
Impact；Assembling and carrying the stage using interior card model, realizing quick assembling and carrying；Wild card sample is adopted in testing stage
Plate, it is real to react the final deviation of postwelding；2. while the present invention improves construction precision, technological process is simplified, it is right to realize
The intuitive and accurate detection of end-state, extensively applies in the building course of LNG ship；3. the present invention be directed to each is tired
The special interior card of labor design of node and wild card model, site operation personnel are positioned in assembling by interior card model, are examined
Test personnel to test by wild card model butt welding posterior nodal point, while work on the spot amount is greatly reduced, greatly improve
Assembly precision and inspection qualification rate；4. either interior card model or wild card model have angle and the quarter of fixation in the present invention
Line, only needs to be chosen by number according to hull construction monitoring table, easy to use, stable performance, two class samples when actually used
Plate is used cooperatively, and solves the problems, such as that traditional measurement mode cannot take into account rapid construction and end-state detection accuracy.
Description of the drawings
Fig. 1 is the intersecting Node distribution figure of LNG ship three-dimensional grillage in prior art.
Fig. 2 is that Fig. 1 interior joints are distributed detail drawing.
Fig. 3 is the structural representation of interior card model in the present invention.
Fig. 4 is the structural representation of wild card model in the present invention.
Fig. 5 is the use state figure that interior card model is used for node one in the present invention.
Fig. 6 is the use state figure that wild card model is used for node one in the present invention.
Wherein reference：
Card model in 1-, the hypotenuses of 11- first, the right-angle sides of 12- first, the inspection lines of 13- first, 14- clearance holes, 2- wild card models,
The hypotenuses of 21- second, the right-angle sides of 22- second, 23-C types side, the inspection lines of 24- second, 25- through holes, 3- transverse plates, the bases of 31- first
The vertical outside Molded Line of directrix, 32- Molded Lines, 4- vertical plates, the datum lines of 41- second, 42-, 43- vertical plates inner side Molded Line,
Molded Line on the outside of 5- swash plates, 51- inner sides Molded Line, 52-.
Specific embodiment
Further details of elaboration is done to technical scheme below in conjunction with specific embodiment, but should not be limited with this
Determine protection scope of the present invention.
As seen in figures 3-6, the present embodiment is used for the detecting tool system of LNG ship cargo tank three-dimensional plate CM nodes, the detection
Fixture system includes interior card model 1 and wild card model 2, and the interior card model 1 is used for LNG ship cargo tank three-dimensional plate assembling stage CM
The centering of node, the wild card model 2 is used for the verification of CM node testing stages after LNG ship cargo tank three-dimensional plate weld, described
Three-dimensional plate includes transverse plate 3, vertical plate 4 and swash plate 5, and the angle between the transverse plate 3 and swash plate 5 is α, on transverse plate 3
First datum line 31 perpendicular with transverse plate 3 is carved with, second datum line perpendicular with vertical plate 4 is carved with vertical plate 4
41。
Card model 1 is the structure fastened with three-dimensional plate inner side in the present embodiment, and the interior card model 1 includes the first hypotenuse
11 and first right-angle side 12, the angle between the right-angle side 12 of first hypotenuse 11 and first is β, between β the and α angles each other
Supplementary angle, is carved with the first inspection line 13, first inspection after fastening with three-dimensional plate inner side of interior card model 1 on interior card model 1
The datum line 31 of line 13 and first is provided with clearance hole 14 on same straight line in the drift angle of interior card model 1, the interior card model 1
Precision controlling value be L1, the L1 be the summit Y of interior card model 1 and first inspection line 13 between horizontal range, described first
The distance between datum line 31 and vertical plate inner side Molded Line 43 are d, the L1=d+1/2（T1+t3/tan α ﹣ t2/sin α）.
The present embodiment wild card model 2 is and the structure that fastens of three-dimensional plate outside, and the wild card model 2 is c-type structure, institute
Wild card model 2 is stated including the second hypotenuse 21, the second right-angle side 22 and c-type side 23, the right-angle side 22 of second hypotenuse 21 and second
Between angle be γ, the γ=90 °+α is provided with the second inspection line 24, wild card model 2 and three-dimensional on the wild card model 2
Plate outside fasten after it is described second inspection the datum line 41 of line 24 and second on same straight line, the top of the wild card model 2
Through hole 25 is provided with angle, on the through hole 25 include M points, N points and Q points, the distance between the M points and N points be e, M points
It is a with the distance between Q points, the Q points to the vertical range between the second inspection line 24 is b, and second datum line 41 is arrived
Vertical range between the lower limb of transverse plate 3 is c, and the precision controlling value of the wild card model 2 is L2, the L2 be N points with
Vertical range between second hypotenuse 21, L2=a × sin α-（e+b-c）×cosα+1/2（T1 × sin α+t3 × cos α ﹣
t2）.N, M, Q point changes without particular meaning with the change of numerical value a, b, c, e in the present embodiment, the position of N, M, Q point be a, b,
The final embodiment of tetra- numerical value of c, e, wherein a, b, c, e can be any value, as long as ensure through hole not with transverse plate phase
Contact, the usual round numbers of a, b, c, e in engineer applied is convenient for measuring and calculates.
Angle α in the present embodiment between transverse plate and swash plate can be in theory 0 °~180 °, but actually should in engineering
Used time, it is contemplated that assembling and welding space, between 30 °~150 °, the present embodiment is directed to first to the angular range general control
Angle α is 45 ° for node.
The present embodiment is used for the detection method of the detecting tool system of LNG ship cargo tank three-dimensional plate C M nodes, including following
Step：
Step 1, in three-dimensional plate assembling stage, according to hull construction table is monitored, and the three-dimensional plate phase with required centering is chosen by number
The interior card model of matching,
Step 2, will fasten on the inside of interior card model 1 and three-dimensional plate, make the first right-angle side 12 tight with the Molded Line 32 of transverse plate 3
Closely connected conjunction, then aligns the first inspection line 13 with the first datum line 31,
Step 3, by the inner side Molded Line 51 of swash plate 5 and in the transverse plate 3, vertical plate 4 and the assembling process of swash plate 5 in three-dimensional plate
One hypotenuse 11 is brought into close contact, and completes the assembling of three-dimensional plate and the centering of three-dimensional plate CM nodes；
Step 4, the checking stage of CM nodes testing stage, wild card model 2 is mutually blocked with the outside of three-dimensional plate after three-dimensional plate weld
Close, the second inspection line 24 is aligned with the second datum line 41, if the second hypotenuse 21 of wild card model 2 is managed with the outside of swash plate 5
It is brought into close contact by line 52, the second right-angle side 22 is brought into close contact with the vertical outside Molded Line 42 of vertical plate 4, in showing three-dimensional plate CM
Heart line node is entirely on the center；Cannot fit if any one side, then be measured by clearance gauge between border and the three-dimensional plate of wild card model 2
Gap, gap width is within claimed range；If gap width is not within allowed band, work is corrected and repaired
Industry, until gap width meets tolerance.
Preferably, the present embodiment marks the first inspection line 13 in the process segment of interior card model 1 in its two sides numerical control；
In verification measuring surface after the completion of three-dimensional plate weld, live snap the line marks the second datum line 41.
For the characteristic of NO.96 type LNG ship maintenance systems, the angle [alpha] at its cargo tank node is 45 degree, therefore, it is interior
The all plate angles of card model, wild card are fixed as 135 degree, using special fixed model rather than adjustable model, it is ensured that dress
With and measurement precision and stability；In swash plate component assembly or segmental hoisting, using interior card model, because interior card model sets
Put in cargo hold face, operating space is sufficient.And the datum line of reverse side component has just passed through numerical control in the part stage on base plane
Line is completed, only need to carry out operating line during construction, it is simple, convenient, realize quick assembling or Quick carrying；Weldering
Adjacent grillage may produce certain welding deformation in welding process after the completion of connecing, and the former line on grillage also becomes therewith
Change, such as also continue to the centering using interior card model to three-dimensional grillage and test, then must rule again, but also need to be to thickness
Verification is measured, otherwise detection data there may be certain error.Therefore, the inspection of postwelding end-state should adopt wild card
Model is directly tested to related grillage, can obtain its final deviation with intuitive and accurate.
By taking NO.96 type LNG ships as an example, using the such as table 1 below of the measured data after the method, increase substantially in operating efficiency
On the premise of, assembly precision is obviously improved, far above required value.
Table 1
Although above-described embodiment makes specific descriptions to the present invention, for the person of ordinary skill of the art, should
This is interpreted as to modify based on present disclosure or changing within the spirit and scope without departing from the present invention
Enter, these modification and improvement are all within the spirit and scope of the present invention.
Claims (9)
1. a kind of detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes, it is characterised in that the detecting tool system
Including interior card model（1）With wild card model（2）, the interior card model（1）For LNG ship cargo tank three-dimensional plate assembling stage CM sections
The centering of point, the wild card model（2）It is described for the verification of CM node testing stages after LNG ship cargo tank three-dimensional plate weld
Three-dimensional plate includes transverse plate（3）, vertical plate（4）And swash plate（5）, the transverse plate（3）And swash plate（5）Between angle be α,
Transverse plate（3）On be carved with and transverse plate（3）The first perpendicular datum line（31）, in vertical plate（4）On be carved with and vertical plate（4）
The second perpendicular datum line（41）.
2. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 1, its feature exists
In the interior card model（1）The structure for being and fastening on the inside of three-dimensional plate, the interior card model（1）Including the first hypotenuse（11）
With the first right-angle side（12）, first hypotenuse（11）With the first right-angle side（12）Between angle be β, between β the and α angles
Supplementary angle each other, in interior card model（1）On be carved with the first inspection line（13）, interior card model（1）Institute after fastening with three-dimensional plate inner side
State the first inspection line（13）With the first datum line（31）On same straight line, in interior card model（1）Drift angle be provided with clearance hole
（14）.
3. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 2, its feature exists
In the interior card model（1）Precision controlling value be L1, the L1 be interior card model（1）Summit Y and first inspection line（13）
Between horizontal range, first datum line（31）With vertical plate inner side Molded Line（43）The distance between be d, the L1=d
+1/2（T1+t3/tan α ﹣ t2/sin α）.
4. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 1, its feature exists
In the wild card model（2）The structure for being and fastening on the outside of three-dimensional plate, the wild card model（2）It is described outer for c-type structure
Card model（2）Including the second hypotenuse（21）, the second right-angle side（22）
With c-type side（23）, second hypotenuse（21）With the second right-angle side（22）Between angle be γ, the γ=90 °+α,
In the wild card model（2）It is provided with the second inspection line（24）, wild card model（2）Described second after fastening with three-dimensional plate outside
Inspection line（24）With the second datum line（41）On same straight line, the wild card model（2）Drift angle at be provided with through hole
（25）.
5. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 3, its feature exists
In the through hole（25）Upper to include M points, N points and Q points, the distance between the M points and N points are e, between M points and Q points
Distance is a, and the Q points are to the second inspection line（24）Between vertical range be b, second datum line（41）To transverse plate
（3）Lower limb between vertical range be c, the wild card model（2）Precision controlling value be L2, the L2 is N points and the
Two hypotenuses（21）Between vertical range, L2=a × sin α-（e+b-c）×cosα+1/2（T1 × sin α+t3 × cos α ﹣
t2）.
6. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 1, its feature exists
In the α is 0 °~180 °.
7. the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 6, its feature exists
In the α is 30 °~150 °.
8. a kind of detection method of the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes, it is characterised in that include
Following steps：
Step 1, in three-dimensional plate assembling stage, according to hull construction table is monitored, and the three-dimensional plate phase with required centering is chosen by number
The interior card model of matching,
Step 2, by interior card model（1）With fasten on the inside of three-dimensional plate, make the first right-angle side（12）With transverse plate（3）Theory
Line（32）It is brought into close contact, then checks line by first（13）With the first datum line（31）Align,
Step 3, in the transverse plate of three-dimensional plate（3）, vertical plate（4）And swash plate（5）By swash plate in assembling process（5）Inner side it is theoretical
Line（51）With the first hypotenuse（11）It is brought into close contact, completes the assembling of three-dimensional plate and the centering of three-dimensional plate CM nodes；
Step 4, the checking stage of CM nodes testing stage after three-dimensional plate weld, by wild card model（2）With the outside phase of three-dimensional plate
Engaging, by second line is checked（24）With the second datum line（41）Align, if wild card model（2）The second hypotenuse（21）With swash plate
（5）Outside Molded Line（52）Be brought into close contact, the second right-angle side（22）With vertical plate（4）Vertical outside Molded Line（42）Closely
Laminating, shows that three-dimensional plate CM centerline nodes are entirely on the center；Cannot fit if any one side, then wild card model be measured by clearance gauge
（2）Border and three-dimensional plate between gap, gap width is within claimed range；If gap width not allowed band it
It is interior, then to be corrected and repairing work, until gap width meets tolerance.
9. the detection method of the detecting tool system for LNG ship cargo tank three-dimensional plate CM nodes according to claim 8,
Characterized in that, in interior card model（1）Process segment mark the first inspection line in its two sides numerical control（13）；In three-dimensional plate weld
After the completion of in verification measuring surface, live snap the line marks the second datum line（41）.
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| CN201611223021.5A CN106679533B (en) | 2016-12-27 | 2016-12-27 | Detecting tool system and detection method for LNG ship cargo tank three-dimensional plate CM node |
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| CN201611223021.5A CN106679533B (en) | 2016-12-27 | 2016-12-27 | Detecting tool system and detection method for LNG ship cargo tank three-dimensional plate CM node |
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| CN109780962A (en) * | 2019-02-27 | 2019-05-21 | 上海外高桥造船有限公司 | The measurement method of node deviation measuring instrument and node deviation |
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| CN110487143A (en) * | 2019-07-10 | 2019-11-22 | 沪东中华造船(集团)有限公司 | A kind of inclined-plane segmented node quickly takes a measurement method |
| CN114111512A (en) * | 2021-10-15 | 2022-03-01 | 沪东中华造船(集团)有限公司 | CM node sample plate inspection method for ship cargo space region |
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