CN109341476B - Ship piping system subsection installation position precision detection tool and detection method - Google Patents
Ship piping system subsection installation position precision detection tool and detection method Download PDFInfo
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- CN109341476B CN109341476B CN201811234683.1A CN201811234683A CN109341476B CN 109341476 B CN109341476 B CN 109341476B CN 201811234683 A CN201811234683 A CN 201811234683A CN 109341476 B CN109341476 B CN 109341476B
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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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
The invention relates to the technical field of ship piping system sectional installation, and discloses a detection tool and a detection method for the precision of a ship piping system sectional installation position. The ship piping sectional installation position precision detection tool comprises a pair of connecting rods, one ends of the connecting rods are rotatably connected through hinge shafts, the other ends of the connecting rods are respectively provided with positioning pins matched with bolt holes in piping flanges, the axes of the positioning pins are parallel to the axis of the hinge shafts, and the distances between the two positioning pins and the hinge shafts are equal. The invention improves the convenience and the precision of the detection of the position of the ship piping system during the sectional installation of the ship piping system, thereby reducing the number of folded pipes at the hull stage and improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of ship piping system sectional installation, in particular to a tool and a method for detecting the precision of a ship piping system sectional installation position.
Background
In the manufacturing process of ships, the installation of the ship hull section pipe system and the folding of the pipe system when the ship hull sections are butted are involved. In order to ensure smooth piping closure, it is necessary to improve the accuracy of installation of the hull section piping.
In the prior art, a plumb bob method is adopted for measuring the position precision of a piping system in a sectional installation stage, and two problems exist in the method:
firstly, the segmentation needs to be adjusted to be in a horizontal state, which is troublesome and wastes certain manpower and material resources; secondly, obstacles sometimes exist at the plumb bob, so that the measurement is influenced; and if the measurement is inaccurate, the later-stage folding can be influenced, so that some pipelines can be installed only when the later-stage folding is carried out, and the working efficiency is reduced.
Therefore, it is important to find a simple measurement method.
Disclosure of Invention
In order to solve the problems, the invention provides a detection tool and a detection method for the accuracy of the installation position of a ship piping system section, and aims to improve the convenience and the detection accuracy of the detection of the piping system position during the installation of the ship piping system section, further reduce the number of folded pipes at a ship body stage and improve the working efficiency. The specific technical scheme is as follows:
the precision detection tool for the section installation position of the ship piping system comprises a pair of connecting rods, wherein one ends of the connecting rods are rotatably connected through a hinge shaft, the other ends of the connecting rods are respectively provided with a positioning pin which is matched with a bolt hole in a piping system flange, the axis of each positioning pin is parallel to the axis of the hinge shaft, and the distance between the two positioning pins and the hinge shaft is equal.
The principle used by this detection tool is mainly two-fold: firstly, the angle bisector of the vertex angle of the isosceles triangle and the central line of the corresponding side of the angle coincide with the perpendicular bisector, namely, the three lines are integrated. And secondly, bolt holes on the pipe system flange are symmetrically arranged, and the specifications of the bolt holes on the common pipe system flange are less, namely four bolt holes of 14mm, 18mm, 22mm and 26mm are mainly used. The connecting rods are equivalent to two waists of the isosceles triangle, the centers of the hinge shafts are the vertexes of the isosceles triangle, and the centers of the two positioning pins are the other two vertexes of the isosceles triangle.
When the device is used, two positioning pins on the detection tool are respectively inserted into two symmetrical bolt holes on the pipe system flange, and the installation errors in the other two directions except the pipe folding direction can be easily obtained. And the connecting rod has certain length, can effectively avoid some measuring obstacles when using the long connecting rod, reaches simple convenient measuring purpose, and has improved and detected the precision.
The length of the extending connecting rod can be adjusted in different steps by respectively inserting the two positioning pins into the two symmetrical bolt holes at different positions on the piping system flange.
The invention utilizes a pair of connecting rods which can rotate relatively and positioning pins arranged on the connecting rods to realize the measurement of the position of the piping system flange, compared with the traditional plumb bob measuring method, the invention can realize the accurate measurement and installation of the piping system without adjusting the subsection to be horizontal, thereby improving the working efficiency; meanwhile, the invention can bypass the barrier during measurement and has good convenience.
As a preferable scheme of the present invention, the positioning pin is a positioning pin of a stepped shaft structure, the positioning pin of the stepped shaft structure includes a plurality of positioning cylinders with different diameters, axes of the positioning cylinders are coaxial with each other and are sequentially arranged from small to large according to sizes of the positioning cylinders and are of a stepped shaft structure, and in the positioning cylinders, a smallest positioning cylinder is located at the other end of a connection position of the positioning pin and the connecting rod on the positioning pin.
The axial positions of the positioning cylinders on the two positioning pins are respectively corresponding and consistent, and the sizes of the positioning cylinders are respectively equal at the corresponding positions.
Above-mentioned through set up a plurality of location cylinders on the locating pin, improved measuring tool's commonality on the one hand, on the other hand has also reduced measuring tool's cost.
Preferably, the positioning cylinders on the positioning pins of the stepped shaft structure comprise positioning cylinders with diameters of phi 13, phi 17, phi 21 and phi 25 respectively.
Preferably, the positioning cylinders on the positioning pins of the stepped shaft structure comprise positioning cylinders with diameters phi 14, phi 18, phi 22 and phi 26 respectively.
Preferably, the connecting rod is made of flat iron.
To facilitate the measurement. And a central mark point is arranged at the central position of the axis at one end of the hinge shaft.
Similarly, one end of the hinge shaft is provided with a reference excircle for measurement.
A method for detecting the accuracy of the installation position of the ship piping section by adopting the detection tool comprises the following steps:
and 3, calculating a difference value and an average value according to the distances from the center of the hinge shaft to the reference bottom surfaces on the sections obtained in the step 1 and the step 2, further obtaining a circumferential position error of the bolt holes on the piping system flange according to the difference value, and obtaining a height position deviation of the center of the piping system flange according to the average value.
A method for detecting the accuracy of the installation position of a ship piping section further comprises the following steps:
and 6, calculating the average value of the distances from the center of the hinge shaft to the reference side surfaces on the sections respectively obtained in the step 4 and the step 5, and further obtaining the left and right position deviation of the center of the piping system flange according to the average value.
The detection method realizes the detection of the circumferential position error of the bolt hole on the piping system flange, the detection of the left and right position error of the center of the piping system flange and the detection of the up and down position error of the center of the piping system flange. By using the detection tool, the measurement error of the pipe in the stage of sectional installation can be further reduced, and a good foundation is laid for reducing the number of folded pipes in the stage of a slipway in the future.
The invention has the beneficial effects that:
firstly, the precision detection tool and the detection method for the installation position of the ship piping section are used for measuring the position of a piping flange by utilizing a pair of connecting rods capable of rotating relatively and positioning pins arranged on the connecting rods, and compared with the traditional plumb bob measuring method, the accurate measurement and installation of the piping can be realized without leveling the section, so that the working efficiency is improved; meanwhile, the invention can bypass the barrier during measurement and has good convenience.
Secondly, according to the ship piping system subsection installation position precision detection tool and the detection method, the plurality of positioning cylinders are arranged on the positioning pins, so that the universality of the measurement tool is improved, and the cost of the measurement tool is reduced.
Thirdly, the tool and the method for detecting the accuracy of the installation position of the ship piping section realize the detection of the circumferential position error of the bolt hole on the piping flange, the detection of the left and right position error of the center of the piping flange and the detection of the up and down position error of the center of the piping flange. By using the detection tool, the measurement error of the pipe in the stage of sectional installation can be further reduced, and a good foundation is laid for reducing the number of folded pipes in the stage of a slipway in the future.
Drawings
FIG. 1 is a schematic structural diagram of a tool for detecting the installation position accuracy of a ship piping segment according to the invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic diagram of the inspection tool of FIG. 1 for the accuracy of the installation position of the ship's piping sections.
In the figure: 1. the device comprises a connecting rod, 2, a hinge shaft, 3, a pipe system flange, 4, a bolt hole, 5, a positioning pin, 6, a positioning cylinder, 7, a center mark point, 8, a reference excircle, 9, a reference bottom surface, 10 and a reference side surface.
In the figure, A, B is the distance from the center of the hinge shaft to the reference bottom surface on the segment measured on the left side of the flange and the right side of the flange, respectively.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1:
fig. 1 to 3 show an embodiment of a tool for detecting the installation position accuracy of a ship piping segment according to the present invention, which comprises a pair of connecting rods 1, wherein one end of each connecting rod 1 is rotatably connected by a hinge shaft 2, the other end of each connecting rod 1 is provided with a positioning pin 5 for fitting with a bolt hole 4 on a piping flange 3, the axis of each positioning pin 5 is parallel to the axis of the hinge shaft 2, and the two positioning pins 5 are equidistant from the hinge shaft 2.
The principle used by this detection tool is mainly two-fold: firstly, the angle bisector of the vertex angle of the isosceles triangle and the central line of the corresponding side of the angle coincide with the perpendicular bisector, namely, the three lines are integrated. Secondly, bolt holes 4 on the piping system flange 3 are symmetrically arranged, and the specifications of the bolt holes 4 on the common piping system flange 3 are less, and the four specifications mainly comprise 14mm, 18mm, 22mm and 26 mm. The connecting rod 1 is equivalent to two waists of an isosceles triangle, the center of the hinge shaft 2 is the vertex of the isosceles triangle, and the centers of the two positioning pins 5 are the other two vertexes of the isosceles triangle.
When the device is used, two positioning pins 5 on the detection tool are respectively inserted into two symmetrical bolt holes 4 on the pipe system flange 3, and the installation errors in the other two directions except the pipe folding direction can be easily obtained. And the connecting rod 1 has a certain length, so that some measuring obstacles can be effectively avoided when the long connecting rod 1 is used, the aim of simple and convenient measurement is fulfilled, and the detection precision is improved.
The length of extension of the connecting rod 1 can also be adjusted in stages by inserting two positioning pins 4 into two symmetrical bolt holes 4 at different positions on the piping flange 3.
In the embodiment, the position of the piping system flange 3 is measured by utilizing the pair of relatively rotatable connecting rods 1 and the positioning pins 5 arranged on the connecting rods 1, and compared with the traditional plumb bob measuring method, the accurate measurement and installation of the piping system can be realized without adjusting the sections to be horizontal, so that the working efficiency is improved; simultaneously, this embodiment can bypass the barrier when measuring, and the convenience is good.
As the preferred scheme of this embodiment, locating pin 5 is the locating pin of step shaft structure, the locating pin 5 of step shaft structure includes the location cylinder 6 of a plurality of different diameters of quantity, the axis of location cylinder 6 is coaxial each other and according to the size of location cylinder 6 sets gradually from small to big and is the step shaft structure, and in the location cylinder 6, a location cylinder 6 of its minimum is located on locating pin 5 the other end of locating pin 5 and connecting rod 1 junction.
The axial positions of the positioning cylinders 6 on the two positioning pins 5 are respectively corresponding and consistent, and the sizes of the positioning cylinders 6 are respectively equal at the corresponding positions.
As the positioning cylinders 6 are arranged on the positioning pin 5, on one hand, the universality of the measuring tool is improved, and on the other hand, the cost of the measuring tool is also reduced.
Preferably, the positioning cylinder 6 on the positioning pin 5 of the stepped shaft structure comprises positioning cylinders with diameters of phi 13, phi 17, phi 21 and phi 25 respectively.
Preferably, the positioning cylinder 6 on the positioning pin 5 of the stepped shaft structure comprises positioning cylinders with diameters phi 14, phi 18, phi 22 and phi 26 respectively.
Preferably, the connecting rod 1 is made of flat iron.
To facilitate the measurement. And a central mark point 7 is arranged at the central position of the axis at one end of the hinge shaft 2.
Similarly, one end of the hinge shaft 2 is provided with a reference excircle 8 for measurement.
Example 2:
a method for detecting the accuracy of the installation position of the ship piping section by adopting the detection tool of the embodiment comprises the following steps:
and 3, calculating a difference value (A-B) and an average value (A + B)/2 according to the distances A and B from the center of the hinge shaft to the reference bottom surface on the segment obtained in the step 1 and the step 2 respectively, further obtaining the circumferential position error of the bolt hole 4 on the piping flange 3 according to the difference value (A-B), and obtaining the height position deviation of the center of the piping flange 3 according to the average value (A + B)/2.
A method for detecting the accuracy of the installation position of a ship piping section further comprises the following steps:
and 6, calculating the average value of the distances from the center of the hinge shaft 2 to the reference side 10 on the segment respectively obtained in the steps 4 and 5, and further obtaining the left and right position deviation of the center of the piping system flange 3 according to the average value.
The detection method realizes the detection of the circumferential position error of the bolt hole 4 on the pipe system flange 3, the detection of the left and right position error of the center of the pipe system flange 3 and the detection of the up and down position error of the center of the pipe system flange 3. By using the detection tool, the measurement error of the pipe in the stage of sectional installation can be further reduced, and a good foundation is laid for reducing the number of folded pipes in the stage of a slipway in the future.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The precision detection tool for the section installation position of the ship piping system is characterized by comprising a pair of connecting rods, wherein one ends of the connecting rods are rotatably connected through a hinge shaft, the other ends of the connecting rods are respectively provided with a positioning pin matched with a bolt hole on a piping system flange, the axis of the positioning pin is parallel to the axis of the hinge shaft, and the distance between the two positioning pins and the hinge shaft is equal; through inserting two locating pins respectively two symmetry bolt holes on the different positions on the piping flange, realize the stepping of connecting rod extension length and adjust.
2. The tool for detecting the accuracy of the installation position of the ship piping system segments as claimed in claim 1, wherein the positioning pins are positioning pins of a stepped shaft structure, the positioning pins of the stepped shaft structure comprise a plurality of positioning cylinders with different diameters, the axes of the positioning cylinders are coaxial with each other and are arranged in sequence from small to large according to the sizes of the positioning cylinders and are of a stepped shaft structure, and the smallest positioning cylinder of the positioning cylinders is located at the other end of the connection position of the positioning pin and the connecting rod on the positioning pin.
3. The tool for detecting the installation position accuracy of the ship piping segment as claimed in claim 2, wherein the axial positions of the positioning cylinders on the two positioning pins are respectively consistent, and the sizes of the positioning cylinders are respectively equal at the corresponding positions.
4. The tool of claim 3, wherein the locating cylinders on the locating pins of the stepped shaft structure comprise locating cylinders with diameters of phi 13, phi 17, phi 21 and phi 25.
5. The tool of claim 3, wherein the locating cylinders on the locating pins of the stepped shaft structure comprise locating cylinders with diameters of phi 14, phi 18, phi 22 and phi 26.
6. The tool of claim 1, wherein the connecting rod is a connecting rod made of flat iron.
7. The tool for detecting the accuracy of the installation position of the ship pipe system segments as claimed in claim 1, wherein a central mark point is arranged at the axial center position of one end of the hinge shaft.
8. The tool for detecting the installation position accuracy of the ship pipe system section as claimed in claim 1, wherein one end of the hinge shaft is provided with a reference outer circle for measurement.
9. A method for detecting the installation position accuracy of a ship pipe system section by using the detection tool as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:
step 1, on the left side of a ship piping flange, taking two symmetrical bolt holes on the left side of the flange, which are respectively positioned at the upper position and the lower position of a horizontal central line, on the piping flange, inserting a pair of positioning cylinders on a detection tool into the two symmetrical bolt holes on the left side of the flange, and then measuring the distance from the center of a hinge shaft to a reference bottom surface on a section;
step 2, on the right side of a ship piping flange, taking two symmetrical bolt holes on the right side of the flange, which are respectively positioned at the upper position and the lower position of a horizontal central line, on the piping flange, inserting a pair of positioning cylinders on a detection tool into the two symmetrical bolt holes on the right side of the flange, and then measuring the distance from the center of a hinge shaft to a reference bottom surface on a section;
and 3, calculating a difference value and an average value according to the distances from the center of the hinge shaft to the reference bottom surfaces on the sections obtained in the step 1 and the step 2, further obtaining a circumferential position error of the bolt holes on the piping system flange according to the difference value, and obtaining a height position deviation of the center of the piping system flange according to the average value.
10. The method for detecting the installation position accuracy of the ship pipe system segment as claimed in claim 9, further comprising the following steps:
step 4, taking two symmetrical bolt holes on the upper side of the flange, which are positioned on the left and right of the vertical center line on the ship piping flange respectively, inserting a pair of positioning cylinders on a detection tool into the two symmetrical bolt holes on the upper side of the flange, and then measuring the distance from the center of a hinge shaft to a reference side surface on a section;
step 5, taking two symmetrical bolt holes on the lower side of the flange, which are positioned on the left and right sides of the vertical center line on the ship piping flange, respectively, inserting a pair of positioning cylinders on a detection tool into the two symmetrical bolt holes on the lower side of the flange, and then measuring the distance from the center of a hinge shaft to a reference side surface on a section;
and 6, calculating the average value of the distances from the center of the hinge shaft to the reference side surfaces on the sections respectively obtained in the step 4 and the step 5, and further obtaining the left and right position deviation of the center of the piping system flange according to the average value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234683.1A CN109341476B (en) | 2018-10-23 | 2018-10-23 | Ship piping system subsection installation position precision detection tool and detection method |
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| CN201811234683.1A CN109341476B (en) | 2018-10-23 | 2018-10-23 | Ship piping system subsection installation position precision detection tool and detection method |
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| CN109341476A CN109341476A (en) | 2019-02-15 |
| CN109341476B true CN109341476B (en) | 2020-12-29 |
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| CN114932519A (en) * | 2022-06-22 | 2022-08-23 | 东风汽车股份有限公司 | Compound locating pin and tool |
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| JP2649581B2 (en) * | 1989-07-21 | 1997-09-03 | 日興建設株式会社 | Shaft center detector for circular cross-section members |
| CN201548162U (en) * | 2009-09-17 | 2010-08-11 | 宝山钢铁股份有限公司 | Measuring device for helix deviation of welding line of straight seam steel pipe |
| CN203069183U (en) * | 2012-12-17 | 2013-07-17 | 天津新港船舶重工有限责任公司 | Leveling instrument for assembling piping flange |
| CN105618973A (en) * | 2016-03-22 | 2016-06-01 | 江龙船艇科技股份有限公司 | Spirit level for ship flange mounting and ship flange mounting process |
| CN206146352U (en) * | 2016-08-29 | 2017-05-03 | 芜湖新兴铸管有限责任公司 | Flange hole center distance examines utensil |
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