CN107421482B - A kind of method of LNG ship volume of compartment qualification degree judgement - Google Patents
A kind of method of LNG ship volume of compartment qualification degree judgement Download PDFInfo
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- CN107421482B CN107421482B CN201710778795.2A CN201710778795A CN107421482B CN 107421482 B CN107421482 B CN 107421482B CN 201710778795 A CN201710778795 A CN 201710778795A CN 107421482 B CN107421482 B CN 107421482B
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of methods of LNG ship volume of compartment qualification degree judgement, belong to shipbuilding technical field.This method crosses respectively to eight corners of two transverse bulkheads of cabin using dedicated over-lapping stitch device, determine eight measuring nodes, reflector plate is mounted in eight measuring nodes, and the height value and half width values of eight measuring nodes are measured with total station, calculate the average value of the height of transverse bulkhead and the average value of width, and be compared the average value of the average value of the height of transverse bulkhead and width with the theoretical value of the theoretical value of transverse bulkhead and width respectively, whether the volume of compartment to judge the LNG ship is qualified.This method is simple and fast, is easy to grasp, and avoids error caused by method of the tradition using tape measure transverse bulkhead size, improves the accuracy of LNG ship volume of compartment qualification degree judgement.
Description
Technical field
The invention belongs to shipbuilding technical fields, more particularly to a kind of method of LNG ship volume of compartment qualification degree judgement.
Background technique
After LNG ship Ship Structure builds completion, precise measurement must be carried out to hull volume of compartment, the quality of volume of compartment control is
Shipowner carries out one of hull construction quality assessment standard.The height and width of transverse bulkhead are usually measured using tape measure, and will be surveyed
The height value and width value obtained is compared with theoretical level value and molded breadth value respectively, and then judges whether ship volume of compartment closes
Lattice.Utilize tape measure, it is necessary to built in cabin scaffold could complete measurement work, such working method efficiency compared with
It is low, and the low measurement accuracy of tape measure, and the size of LNG ship is larger, judged using tape measure LNG ship volume of compartment whether
Qualification, error is larger, and whether the volume of compartment for being unable to accurate judgement LNG ship is qualified.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of judgements of LNG ship volume of compartment qualification degree
Method.Whether this method is simple and fast, is easily mastered, can qualified with the volume of compartment of accurate judgement LNG ship using this method.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of LNG ship volume of compartment qualification degree judgment method, comprising the following steps:
Step 1: refuting out the measuring node a on the first transverse bulkhead of cabin with over-lapping stitch device, the over-lapping stitch device is turning shape
Plate structure, the over-lapping stitch device include the first scribing line portion and the second scribing line portion, first scribing line portion and the second scribing line portion it
Between angle α be 135 °, the inner side edge boundary line in first scribing line portion is parallel with its outer side edges boundary line, in second scribing line portion
Side boundary line is parallel with its outer side edges boundary line, and first scribing line portion is equal with the width in the second scribing line portion, by the over-lapping stitch device
It is placed on a corner of the first transverse bulkhead, by the outer side edges boundary line in the first scribing line portion of over-lapping stitch device and the second scribing line portion
Outer side edges boundary line boundary line corresponding with the first transverse bulkhead is overlapped, and is crossed respectively along over-lapping stitch device the first scribing line portion and second
The inner side edge boundary line in portion is crossed on the first transverse bulkhead, and the intersection point of two scribing line is measuring node a；
Step 2: repeat step 1, successively refute out along clockwise direction measuring node b, measuring node c, measuring node d,
Measuring node e, measuring node f, measuring node g and measuring node h；
Step 3: repeating step 1 and step 2, measuring node a ', measuring node are refuted out on the second transverse bulkhead of cabin
B ', measuring node c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h '；
Step 4: measuring node a, measuring node b, measuring node c, measuring node d, measuring node e, measuring node f,
Measuring node g, it measuring node h, measuring node a ', measuring node b ', measuring node c ', measuring node d ', measuring node e ', surveys
Reflector plate, the central point point of the cross hairs of the reflector plate are mounted on amount node f ', measuring node g ' and measuring node h ' respectively
It is not overlapped with corresponding measuring node；
Step 5: choosing two reference points on hull central weld, the distance between two reference points are not less than 50m,
The central point for mounting reflector plate and reflector plate cross hairs respectively in two reference points is overlapped with corresponding reference point；
Step 6: setting up total station in cabin bottom, total station is taken with reference to ray mode, using one of reference point as
Origin establishes coordinate system, measures the coordinate of another reference point and keeps a record, and measures measuring node a, measuring node b, measurement
Node c, measuring node d, measuring node e, measuring node f, measuring node g, the height value of measuring node h and half width values and doing are remembered
Record；
Step 7: being to turn website to carry out turning station operation with two reference points, measures measuring node a ', measuring node b ', surveys
Measure the height value and half of node c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h '
Width values simultaneously keep a record；
Step 8: the first scribing line portion of over-lapping stitch device and the width in the second scribing line portion are D, the theory of the first transverse bulkhead is high
Degree is H0, the molded breadth of the first transverse bulkhead is W0, the theoretical level of the second transverse bulkhead is H0', the molded breadth of the second transverse bulkhead
For W0', the difference in height of measuring node a and measuring node d are H1, the difference in height of measuring node and measuring node e are H2, measurement section
The width difference of point b and measuring node g is W1, the width difference of measuring node c and measuring node f is W2, measuring node a ' and measurement save
The difference in height of point d ' is H1', the difference in height of measuring node h ' and measuring node e ' are H2', measuring node b ' and measuring node g's '
Width difference is W1', the width difference of measuring node c ' and measuring node f ' are W2', then the actual height of the first transverse bulkhead is H=(H1
+H2)+2D, the developed width of the first transverse bulkhead is W=(W1+W2)+2D, then the actual height of the second transverse bulkhead is H '=(H1′+
H2')+2D, the developed width of the second transverse bulkhead is W '=(W1′+W2')+2D, if H and H0Difference be greater than 20mm, H ' and H0'
Difference is greater than 20mm, W and W0Difference be greater than 20mm or W ' and W0' difference be greater than 20mm, then the volume of compartment of the LNG ship is unqualified,
Conversely, then the volume of compartment of the LNG ship is qualified.
Preferably, notch is equipped at the exterior angle of the over-lapping stitch device.
Preferably, the notch is arc-shaped, and the notch is with the first scribing line portion and the second scribing line portion outer side edges boundary line
Intersection point is the center of circle.
Preferably, the first scribing line portion of the over-lapping stitch device and the width D in the second scribing line portion are 200mm.
The beneficial effects of the present invention are: the present invention judges LNG ship volume of compartment, whether He Ge method is using simple and fast, is easy
It grasps, measuring accuracy is high, and whether the volume of compartment for being conducive to accurate judgement LNG is qualified, improves the precision of LNG ship construction, improves
The efficiency that LNG ship is built.
Detailed description of the invention
Fig. 1 is over-lapping stitch device overall structure diagram of the present invention.
Fig. 2 is over-lapping stitch device top view of the present invention.
Fig. 3 is over-lapping stitch device use state diagram of the present invention.
Fig. 4 is each measuring node distribution schematic diagram on the first transverse bulkhead of the invention.
Fig. 5 is each measuring node distribution schematic diagram on the second transverse bulkhead of the invention.
Fig. 1 is into Fig. 5: 1 is over-lapping stitch device, and 11 be the first scribing line portion, and 12 be the second scribing line portion, and 13 be notch, and 2 be first
Transverse bulkhead, 3 be the second transverse bulkhead.
Specific embodiment
LNG ship volume of compartment qualification degree judgment method of the present invention is done further with specific case study on implementation with reference to the accompanying drawing
Elaborate, in the hope of being more fully apparent from express structure feature and concrete application of the invention, but cannot be used as a limitation
Protection scope of the present invention.
A kind of embodiment: LNG ship volume of compartment qualification degree judgment method, comprising the following steps:
Step 1: refuting out the measuring node a on the first transverse bulkhead of cabin 2, as depicted in figs. 1 and 2, institute with over-lapping stitch device 1
Stating over-lapping stitch device 1 is turning shape plate structure, and the over-lapping stitch device 1 includes the first scribing line portion 11 and the second scribing line portion 12, described
Angle α between first scribing line portion 11 and the second scribing line portion 12 is 135 °, the inner side edge boundary line in first scribing line portion 11 and its
Outer side edges boundary line is parallel, and second scribing line portion, 12 inner side edge boundary line is parallel with its outer side edges boundary line, first scribing line portion 11
Equal with the width in the second scribing line portion 12, the first scribing line portion 11 of the over-lapping stitch device 1 and the width D in the second scribing line portion 12 are
200mm, is equipped with notch 13 at the exterior angle of the over-lapping stitch device 1, the notch 13 be it is arc-shaped, the notch 13 is with the first scribing line
The intersection point in 12 outer side edges boundary line of portion 11 and the second scribing line portion is the center of circle, which is placed on 2 upper left corner of the first transverse bulkhead
Corner, by the outer side edges boundary line in the first scribing line portion 11 of over-lapping stitch device 1 and the outer side edges boundary line in the second scribing line portion 12 with
The corresponding boundary line of first transverse bulkhead 2 is overlapped, as shown in figure 3, respectively along 1 first scribing line portion 11 of over-lapping stitch device and the second scribing line
The inner side edge boundary line in portion 12 is crossed on the first transverse bulkhead 2, and the intersection point of two scribing line is measuring node a；
Step 2: repeat step 1, successively refute out along clockwise direction measuring node b, measuring node c, measuring node d,
Measuring node e, measuring node f, measuring node g and measuring node h, as shown in Figure 4；
Step 3: repeating step 1 and step 2, measuring node a ', measuring node are refuted out on the second transverse bulkhead of cabin 3
B ', measuring node c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h ', such as Fig. 5 institute
Show；
Step 4: measuring node a, measuring node b, measuring node c, measuring node d, measuring node e, measuring node f,
Measuring node g, it measuring node h, measuring node a ', measuring node b ', measuring node c ', measuring node d ', measuring node e ', surveys
Reflector plate, the central point point of the cross hairs of the reflector plate are mounted on amount node f ', measuring node g ' and measuring node h ' respectively
It is not overlapped with corresponding measuring node；
Step 5: choosing two reference points on hull central weld, the distance between two reference points are not less than 50m,
The central point for mounting reflector plate and reflector plate cross hairs respectively in two reference points is overlapped with corresponding reference point；
Step 6: setting up total station in cabin bottom, total station is taken with reference to ray mode, using one of reference point as
Origin establishes coordinate system, measures the coordinate of another reference point and keeps a record, and measures measuring node a, measuring node b, measurement
Node c, measuring node d, measuring node e, measuring node f, measuring node g, the height value of measuring node h and half width values and doing are remembered
Record；
Step 7: being to turn website to carry out turning station operation with two reference points, measures measuring node a ', measuring node b ', surveys
Measure the height value and half of node c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h '
Width values simultaneously keep a record；
Step 8: the first scribing line portion 11 of over-lapping stitch device 1 and the width in the second scribing line portion 12 are D, the first transverse bulkhead 2
Theoretical level is H0, the molded breadth of the first transverse bulkhead 2 is W0, the theoretical level of the second transverse bulkhead 3 is H0', the second transverse bulkhead 3
Molded breadth be W0', the difference in height of measuring node a and measuring node d are H1, the difference in height of measuring node h and measuring node e
For H2, the width difference of measuring node b and measuring node g is W1, the width difference of measuring node c and measuring node f is W2, measurement section
The difference in height of point a ' and measuring node d ' is H1', the difference in height of measuring node h ' and measuring node e ' are H2', measuring node b ' with
The width difference of measuring node g ' is W1', the width difference of measuring node c ' and measuring node f ' are W2', wherein measuring node a and survey
Measure the height difference H of node d1Height value equal to measuring node a subtracts the absolute value of difference obtained by the height value of measuring node d,
That is the height difference H of measuring node a and measuring node d1The height value of=∣ measuring node a-measuring node d Gao Du Zhi ∣, H2、H1′
And H2' calculation method and H1Calculation method it is identical, the width difference of measuring node b and measuring node g are W1Equal to measuring node
The sum of the absolute value of half width values of the absolute value and measuring node g of half width values of b, the i.e. width of measuring node b and measuring node g
Poor W1The half width values ∣, W of the half width values ∣+∣ measuring node g of=∣ measuring node b2、W1' and W2' skill calculation method and W1Calculating
Method is identical, then the actual height of the first transverse bulkhead 2 is H=(H1+H2)+2D, the developed width of the first transverse bulkhead 2 is W=(W1+
W2)+2D, then the actual height of the second transverse bulkhead 3 is H '=(H1′+H2')+2D, the developed width of the second transverse bulkhead 3 be W '=
(W1′+W2')+2D, if H and H0Difference be greater than 20mm, H ' and H0' difference be greater than 20mm, W and W0Difference be greater than 20mm or
W ' and W0' difference be greater than 20mm, then the volume of compartment of the LNG ship is unqualified, conversely, then the volume of compartment of the LNG ship is qualified.
Claims (4)
1. a kind of LNG ship volume of compartment qualification degree judgment method, which comprises the following steps:
Step 1: refuting out the measuring node a on the first transverse bulkhead of cabin (2) with over-lapping stitch device (1), the over-lapping stitch device (1) is
Turning shape plate structure, the over-lapping stitch device (1) include the first scribing line portion (11) and the second scribing line portion (12), first scribing line
Angle α between portion (11) and the second scribing line portion (12) is 135 °, the inner side edge boundary line in first scribing line portion (11) and its outside
Side boundary line is parallel, and second scribing line portion (12) inner side edge boundary line is parallel with its outer side edges boundary line, first scribing line portion
(11) equal with the width in the second scribing line portion (12), which is placed on to a turning of the first transverse bulkhead (2)
Place, by the outer side edges boundary line in the first scribing line portion (11) of over-lapping stitch device (1) and the outer side edges boundary line in the second scribing line portion (12) with
The corresponding boundary line of first transverse bulkhead (2) is overlapped, respectively along (1) first scribing line portion (11) of over-lapping stitch device and the second scribing line portion
(12) inner side edge boundary line is crossed on the first transverse bulkhead (2), and the intersection point of two scribing line is measuring node a；
Step 2: repeating step 1, measuring node b, measuring node c, measuring node d, measurement are successively refuted out along clockwise direction
Node e, measuring node f, measuring node g and measuring node h；
Step 3: repeat step 1 and step 2, refuted out on the second transverse bulkhead of cabin (3) measuring node a ', measuring node b ',
Measuring node c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h '；
Step 4: in measuring node a, measuring node b, measuring node c, measuring node d, measuring node e, measuring node f, measurement
Node g, measuring node h, measuring node a ', measuring node b ', measuring node c ', measuring node d ', measuring node e ', measurement section
Mount reflector plate on point f ', measuring node g ' and measuring node h ' respectively, the central point of the cross hairs of the reflector plate respectively with
Corresponding measuring node is overlapped；
Step 5: choosing two reference points on hull central weld, the distance between two reference points are not less than 50m, two
Reflector plate is mounted in a reference point respectively and the central point of reflector plate cross hairs is overlapped with corresponding reference point；
Step 6: setting up total station in cabin bottom, total station is taken with reference to ray mode, using one of reference point as origin
Coordinate system is established, the coordinate of another reference point is measured and is kept a record, measuring node a, measuring node b, measuring node are measured
C, it measuring node d, measuring node e, measuring node f, measuring node g, the height value of measuring node h and half width values and keeps a record；
Step 7: being to turn website to carry out turning station operation with two reference points, measuring node a ', measuring node b ', measurement section are measured
The height value and half width values of point c ', measuring node d ', measuring node e ', measuring node f ', measuring node g ' and measuring node h '
And it keeps a record；
Step 8: the first scribing line portion (11) of over-lapping stitch device (1) and the width in the second scribing line portion (12) are D, the first transverse bulkhead
(2) theoretical level is H0, the molded breadth of the first transverse bulkhead (2) is W0, the theoretical level of the second transverse bulkhead (3) is H0', the
The molded breadth of two transverse bulkheads (3) is W0', the difference in height of measuring node a and measuring node d are H1, measuring node h and measurement save
The difference in height of point e is H2, the width difference of measuring node b and measuring node g is W1, measuring node c and the width of measuring node f are poor
For W2, the difference in height of measuring node a ' and measuring node d ' is H1', the difference in height of measuring node h ' and measuring node e ' are H2′,
The width difference of measuring node b ' and measuring node g ' is W1', the width difference of measuring node c ' and measuring node f ' are W2', then first
The actual height of transverse bulkhead (2) is H=(H1+H2)+2D, the developed width of the first transverse bulkhead (2) is W=(W1+W2)+2D, then
The actual height of two transverse bulkheads (3) is H '=(H1′+H2')+2D, the developed width of the second transverse bulkhead (3) is W '=(W1′+W2')
+ 2D, if H and H0Difference, H ' and H0' difference, W and W0Difference, W ' and W0' any one of difference be greater than 20mm, then should
The volume of compartment of LNG ship is unqualified, conversely, then the volume of compartment of the LNG ship is qualified.
2. a kind of LNG ship volume of compartment qualification degree judgment method according to claim 1, which is characterized in that the over-lapping stitch device
(1) notch (13) are equipped at exterior angle.
3. a kind of LNG ship volume of compartment qualification degree judgment method according to claim 2, which is characterized in that the notch (13)
To be arc-shaped, the notch (13) is using the intersection point in the first scribing line portion (11) and second scribing line portion (12) outer side edges boundary line as the center of circle.
4. a kind of LNG ship volume of compartment qualification degree judgment method according to claim 1, which is characterized in that the over-lapping stitch device
(1) width D in the first scribing line portion (11) and the second scribing line portion (12) is 200mm.
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| CN110487143B (en) * | 2019-07-10 | 2021-06-01 | 沪东中华造船(集团)有限公司 | Rapid point taking measurement method for slope subsection node |
| CN110864637A (en) * | 2019-11-27 | 2020-03-06 | 航天科技控股集团股份有限公司 | Method for judging dial height and dial surface flatness based on truss manipulator platform |
| CN113124756B (en) * | 2021-05-07 | 2022-11-15 | 江南造船(集团)有限责任公司 | Cabin size measuring method based on laser tracker |
| CN113715987B (en) * | 2021-09-02 | 2024-03-26 | 沪东中华造船(集团)有限公司 | LNG (liquefied Natural gas) bilge control method |
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| CN103471572A (en) * | 2013-09-29 | 2013-12-25 | 长春理工大学 | Total station networking measurement method of large-scale structural component |
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| US8922758B2 (en) * | 2013-03-05 | 2014-12-30 | Trimble Navigation Limited | Stud mapping and layout method |
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| JP2000161956A (en) * | 1998-11-30 | 2000-06-16 | Yanmar Diesel Engine Co Ltd | Method for measuring interior |
| CN1719196A (en) * | 2004-07-09 | 2006-01-11 | 株式会社扫佳 | Measurer and pip displacement processing program |
| CN103017682A (en) * | 2012-12-13 | 2013-04-03 | 江苏新扬子造船有限公司 | Method for measuring geometrical shape of large-scale structure with rangefinders |
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