CN109827491B - Method and device for measuring size of large pipeline - Google Patents
Method and device for measuring size of large pipeline Download PDFInfo
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- CN109827491B CN109827491B CN201910254616.4A CN201910254616A CN109827491B CN 109827491 B CN109827491 B CN 109827491B CN 201910254616 A CN201910254616 A CN 201910254616A CN 109827491 B CN109827491 B CN 109827491B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 85
- 238000004513 sizing Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000000691 measurement method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of pipeline measurement, and particularly relates to a large pipeline size measurement method and a measurement device, wherein the method comprises the following steps: establishing a coordinate system, making a Y-axis straight line, measuring an X-axis coordinate, making an X-axis straight line, measuring a Y-axis coordinate and measuring a Z-axis coordinate. The invention has reasonable design and simple operation, only needs to horizontally place the lower opening of the pipeline, does not need to carry the pipeline again to change the position and the state, has low requirement on manpower, can not finish measurement by a large measuring tool, and is time-saving and labor-saving.
Description
Technical Field
The invention belongs to the technical field of pipeline detection, and particularly relates to a size measurement method and a measurement device for a large pipeline.
Background
In order to avoid the problem that the normal installation is not carried out due to the size problem during the on-site installation, the on-site construction period is delayed, and some unnecessary losses are increased, the size measurement is carried out on each pipeline before delivery, and the size is ensured to be within the tolerance range. For many large-diameter pipelines with space trend, the complexity of measurement is generally considered, only the relative three-dimensional coordinates from an outlet to an inlet are required to be measured on a drawing, two-dimensional coordinates are simulated on a platform during measurement, then the center position of an actual pipeline is compared with the two-dimensional coordinates simulated on the platform for measurement, and two problems are easily encountered in the actual operation process: 1. simulating two-dimensional coordinates may cause certain errors; 2. because the physical size is big, weight is heavy, needs great manpower to put the position and also can cause certain error when putting with the help of the instrument and comparing. Both problems are present at the same time, which easily results in larger measurement errors and waste of larger manpower, and waste of time.
As shown in fig. 1, the existing large pipe is a circular pipe, which includes an upper opening 100 and a lower opening 101, and when the lower opening 101 is horizontally placed, an axis 102 of the large pipe is projected into two sections on a horizontal plane.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a large pipeline size measuring method and a measuring device technical scheme.
The size measurement method of the large pipeline is characterized by comprising the following steps of:
placing a pipeline on a working platform, horizontally placing a lower opening of the pipeline, projecting two sections of straight lines on a horizontal plane by the axis of the pipeline, taking the straight line connected with the lower opening as an X axis, taking the circle center of the lower opening as a coordinate origin, taking a vertical line passing through the coordinate origin as a Z axis, and determining a Y axis;
selecting two first lower flange holes at the lower opening of the pipeline, respectively placing two hole positioning mechanisms into the two first lower flange holes, wherein the two first lower flange holes are symmetrical about a Y axis, adjusting a light emitting device to the position right in the middle of the two hole positioning mechanisms, and emitting visible light by the light emitting device;
selecting a plurality of upper flange holes, determining the position of the central point of the upper opening according to the upper flange holes, using a line drop on the upper flange holes, and obtaining the X-axis coordinate of the central point of the upper opening according to the position of the line drop;
selecting two second lower flange holes at the lower opening of the pipeline, respectively placing two hole positioning mechanisms into the two second lower flange holes, wherein the two second lower flange holes are symmetrical about an X axis, adjusting a light emitting device to the position right in the middle of the two hole positioning mechanisms, emitting visible light by the light emitting device, and obtaining Y-axis coordinates of the center point of the upper opening according to the positions of the two line drops;
and measuring the uppermost dimension of the platform to the flange, and then subtracting the radius of the flange to obtain the Z-axis coordinate of the upper opening.
The size measuring method of the large pipeline is characterized in that when the end face of the upper opening is a vertical face relative to a horizontal face, the specific operation of measuring the X-axis coordinate is as follows: 2 upper flange holes which are positioned at the same horizontal position are randomly taken at the upper opening of the pipeline, a line drop is respectively used on the two upper flange holes, and then the X-axis coordinate of the central point of the upper opening is obtained according to the positions of the two line drops.
The size measuring method of the large pipeline is characterized in that when the end face of the upper opening is an inclined plane relative to the horizontal plane, the specific operation of measuring the X-axis coordinate is as follows: and 2 upper flange holes are taken at the upper opening of the pipeline, the straight line where the 2 upper flange holes are positioned passes through the center point of the upper opening, a line weight is respectively used on the 2 upper flange holes, and the X-axis coordinate of the center point of the upper opening is obtained according to the positions of the 2 line weights.
The size measurement method of the large pipeline is characterized by comprising the following specific operations of measuring X-axis coordinates or Y-axis coordinates of an upper opening center point according to the positions of two or more line weights: and according to the position of the line drop, taking the center point of the line drop, and measuring the distance from the center point to visible light to obtain an X-axis coordinate or a Y-axis coordinate.
The size measuring device for the large pipeline is characterized by comprising a supporting rod, two hole positioning mechanisms and a light emitting device, wherein the supporting rod is provided with a supporting rod sliding part, the two hole positioning mechanisms comprise hole positioning mechanism sliding parts, the two hole positioning mechanism sliding parts are in sliding connection with the supporting rod sliding parts, the sliding paths of the two hole positioning mechanism sliding parts are positioned on the same straight line, and the light emitting device is fixedly connected to the supporting rod.
The size measuring device for the large pipeline is characterized in that the supporting rod sliding part is a sliding groove formed along the length direction of the supporting rod.
The size measuring device for the large pipeline is characterized in that the hole positioning mechanism further comprises a hole positioning mechanism supporting part, a plurality of hole positioning mechanism executing parts which are annularly arranged on the side face of the hole positioning mechanism supporting part, and hole positioning mechanism guiding parts which are sleeved outside the hole positioning mechanism supporting part, wherein the hole positioning mechanism guiding parts are in butt joint with the supporting rods, the hole positioning mechanism executing parts penetrate through the hole positioning mechanism guiding parts and are in sliding connection with the supporting rods, the hole positioning mechanism sliding parts are fixedly connected to the lower ends of the hole positioning mechanism supporting parts, and the hole positioning mechanism supporting parts can extrude the hole positioning mechanism executing parts to move outwards.
The size measuring device for the large pipeline is characterized in that the hole positioning mechanism supporting part is of a conical structure, the hole positioning mechanism executing part is in sliding connection with the hole positioning mechanism supporting part, and when the hole positioning mechanism supporting part moves upwards, the hole positioning mechanism supporting part extrudes the hole positioning mechanism executing part to move outwards.
The size measuring device for the large pipeline is characterized in that scales are arranged on the supporting rods.
The size measuring device for the large pipeline is characterized in that the light emitting device is arranged in the middle of the supporting rod.
The beneficial effects are that: the invention has reasonable design and simple operation, only needs to horizontally place the lower opening of the pipeline, does not need to carry the pipeline again to change the position and the state, has low requirement on manpower, can not finish measurement by a large measuring tool, and is time-saving and labor-saving.
Drawings
FIG. 1 is a schematic diagram of a front view of a pipeline under test in the present invention;
FIG. 2 is a schematic diagram of a left-hand structure of a pipeline under test in the present invention;
FIG. 3 is a schematic top view of the present invention for measuring X-axis coordinates of a pipeline under test;
FIG. 4 is a schematic top view of the present invention for measuring Y-axis coordinates of a pipeline under test;
FIG. 5 is a flow chart of a measurement method according to the present invention;
FIG. 6 is a schematic diagram of a measuring device according to the present invention;
FIG. 7 is an exploded view of the hole positioning mechanism of the present invention.
In the figure: the device comprises a 1-pipeline, a 100-upper opening, a 101-lower opening, a 102-axis, a 103-upper flange hole, a 104-first lower flange hole, a 2-supporting rod, a 200-sliding chute, a 3-hole positioning mechanism, a 300-hole positioning mechanism sliding part, a 301-hole positioning mechanism supporting part, a 302-hole positioning mechanism executing part, a 3020-hole positioning mechanism executing part sliding part, a 303-hole positioning mechanism guiding part, a 4-ray emitting device, a 6-line weight, an a-X axis coordinate value and a b-Y axis coordinate value.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-5, a method for measuring the size of a large pipeline includes the following steps:
establishing a coordinate system:
placing a pipeline on a working platform, horizontally placing a lower opening 101 of the pipeline 1, projecting two sections of straight lines on a horizontal plane by an axis 102 of the pipeline 1, taking the straight line connected with the lower opening 101 as an X axis, taking a central point of the end surface of the lower opening 101 as a coordinate origin, taking a vertical line passing through the coordinate origin and vertical to the horizontal plane as a Z axis, and determining a Y axis;
making a Y-axis straight line:
selecting two first lower flange holes 104 at the lower opening 101 of the pipeline, respectively placing two hole positioning mechanisms 3 into the two first lower flange holes 104, wherein the two first lower flange holes 104 are symmetrical about the Y axis, adjusting the light emitting device 4 to the position right in the middle of the two hole positioning mechanisms 3, and the light emitting device 4 emits visible light rays which are overlapped with the Y axis in a straight line;
measuring X-axis coordinates:
selecting a plurality of upper flange holes 103, determining the position of the central point of the upper opening 100 according to the upper flange holes 103, using a wire weight 5 on the upper flange holes 103, and obtaining the X-axis coordinate of the central point of the upper opening 100 according to the position of the wire weight 5;
making an X-axis straight line:
two second lower flange holes 105 are selected at the lower opening 101 of the pipeline 1, two hole positioning mechanisms 3 are respectively placed into the two second lower flange holes 105, the two second lower flange holes 105 are symmetrical about the X axis, the light emitting device 4 is adjusted to the position right in the middle of the two hole positioning mechanisms 3, the light emitting device 4 emits visible light rays, and the visible light rays are overlapped with the X axis in a straight line;
measuring Y-axis coordinates:
obtaining the Y-axis coordinate of the center point of the upper opening 100 according to the positions of the two line drops 5;
measuring Z-axis coordinates:
the dimension of the platform to the uppermost end of the flange is measured, and then the radius of the flange is subtracted to obtain the Z-axis coordinate of the center point of the upper opening 100.
In measuring the X-axis coordinates, if the upper opening 100 is a vertical plane with respect to a horizontal plane, the specific operation of measuring the X-axis coordinates is: 2 upper flange holes 103 which are positioned at the same horizontal position are arbitrarily taken at the position of the upper opening 100 of the pipeline 1, one line weight 5 is respectively used on the two upper flange holes 103, and then the X-axis coordinate of the center point of the upper opening 100 is obtained according to the positions of the two line weights 5. The measurement of the X-axis coordinate can obtain the middle point through the positions of the two line drop 5 points, then measure the vertical distance from the middle point to the visible light, and also can respectively measure the vertical distance from the two line drop 5 points to the visible light, and the average value is obtained.
In measuring the X-axis coordinates, if the upper opening 100 is an inclined plane with respect to the horizontal plane, the specific operation of measuring the X-axis coordinates is: 2 upper flange holes 103 are taken at the upper opening 100 of the pipeline 1, the straight line of the 2 upper flange holes 103 passes through the center point of the upper opening, a line weight 5 is respectively used on the 2 upper flange holes 103, and the X-axis coordinate of the center point of the upper opening 100 is obtained according to the positions of the 2 line weights 5. The measurement of the X-axis coordinate can obtain the middle point through the positions of the four line drop 5 points, then measure the vertical distance from the middle point to the visible light, and also can respectively measure the vertical distance from the four line drop 5 points to the visible light, and the average value is obtained.
When the Y-axis coordinate is measured, the measuring and calculating method of the line drop 5 is the same as that of the X-axis, and the Y-axis coordinate of the central point of the upper opening 100 can be obtained by calculating the middle point or the average value.
The dimension measuring device of the large pipeline shown in fig. 6 and 7 is applied to the measuring method and comprises a supporting rod 2, two hole positioning mechanisms 3 and a light emitting device 4. The support rod 2 is provided with a support rod sliding part, the two hole positioning mechanisms 3 comprise hole positioning mechanism sliding parts 300, the two hole positioning mechanism sliding parts 300 are in sliding connection with the support rod sliding parts, the sliding paths of the two hole positioning mechanism sliding parts 300 are positioned on the same straight line, and the light emitting device 4 is fixedly connected at the right middle position of the support rod 2.
In the device, the support rod 2 has a long annular structure, and the sliding part of the support rod is a sliding groove 200 formed along the length direction of the support rod. The support bar 2 is also provided with graduations, which facilitate the symmetry of the two hole positioning mechanisms 3 with respect to the light emitting device 4.
In this device, the hole positioning mechanism sliding portion 300 is a cylinder that is clearance-fitted with the chute 200.
In the present apparatus, the hole positioning mechanism 3 further includes a hole positioning mechanism supporting portion 301, a plurality of hole positioning mechanism executing portions 302 provided around the side surface of the hole positioning mechanism supporting portion 301, and a hole positioning mechanism guiding portion 303 provided around the hole positioning mechanism supporting portion 301. The hole positioning mechanism guiding part 303 is of a circular tube structure, a hole positioning mechanism guiding hole through which the hole positioning mechanism executing part 302 passes is formed in the hole positioning mechanism guiding part 303, the hole positioning mechanism guiding part 303 is abutted to the supporting rod 2, the hole positioning mechanism supporting part 301 is of a conical structure, the hole positioning mechanism executing part 302 is of a sheet structure, one end, close to the hole positioning mechanism supporting part 301, of the hole positioning mechanism executing part 302 is fixedly connected with a hole positioning mechanism executing part sliding part 3020 attached to the side surface of the hole positioning mechanism supporting part 301 in a shape, the hole positioning mechanism executing part sliding part 3020 is in sliding connection with the side surface of the hole positioning mechanism supporting part 301, and meanwhile the hole positioning mechanism executing part 302 is also in sliding connection with the hole positioning mechanism guiding hole. The hole positioning mechanism sliding part 300 is fixedly connected to the lower end of the hole positioning mechanism supporting part 301. When the hole positioning mechanism supporting portion 301 moves up, the hole positioning mechanism supporting portion 301 presses the hole positioning mechanism executing portion 302 to move outward.
In the present device, the light emitting device 4 may be any known device capable of emitting visible light, and is preferably an infrared device.
The hole positioning mechanism 3 in the present apparatus may be any other known hole positioning mechanism.
When the device is used, two hole positioning mechanisms 3 are respectively plugged into two flange holes of a pipeline, the hole positioning mechanism sliding parts 300 are pressed to enable the hole positioning mechanism supporting parts 301 to move upwards, the hole positioning mechanism executing parts 302 are further enabled to move outwards, the 4 hole positioning mechanism executing parts 302 are used for positioning the inner walls of the flange holes, taper centering is utilized, the hole positioning mechanisms 3 are not easy to fall, then the two hole positioning mechanisms 3 are symmetrical relative to the light emitting device 4 by moving the supporting rods 2 according to scales, and therefore visible light emitted by the light emitting device is just overlapped with a selected X-axis.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (3)
1. A method of sizing a large pipe comprising:
placing a pipeline on a working platform, horizontally placing a lower opening of the pipeline, projecting two sections of straight lines on a horizontal plane by the axis of the pipeline, taking the straight line connected with the lower opening as an X axis, taking the circle center of the lower opening as a coordinate origin, taking a vertical line passing through the coordinate origin as a Z axis, and determining a Y axis;
selecting two first lower flange holes at the lower opening of the pipeline, respectively placing two hole positioning mechanisms into the two first lower flange holes, wherein the two first lower flange holes are symmetrical about a Y axis, adjusting a light emitting device to the position right in the middle of the two hole positioning mechanisms, and emitting visible light rays by the light emitting device, wherein the visible light rays are overlapped with the Y axis in a straight line;
selecting a plurality of upper flange holes, determining the position of the central point of the upper opening according to the upper flange holes, using a line drop on the upper flange holes, and obtaining the X-axis coordinate of the central point of the upper opening according to the position of the line drop;
two second lower flange holes are selected at the lower opening of the pipeline, two hole positioning mechanisms are respectively placed into the two second lower flange holes, the two second lower flange holes are symmetrical about an X axis, a light emitting device is adjusted to the position right in the middle of the two hole positioning mechanisms, the light emitting device emits visible light rays which are coincident with the X axis, and Y-axis coordinates of the center point of the upper opening are obtained according to the positions of two line weights, and the concrete operation is as follows: according to the position of the line drop, taking a central point, and measuring the distance from the central point to visible light to obtain a Y-axis coordinate;
and measuring the uppermost dimension of the platform to the flange, and then subtracting the radius of the flange to obtain the Z-axis coordinate of the upper opening.
2. The method for measuring the size of a large pipeline according to claim 1, wherein when the end face of the upper opening is a vertical face opposite to the horizontal face, the specific operation of measuring the X-axis coordinate is as follows: 2 upper flange holes which are positioned at the same horizontal position are randomly taken at the upper opening of the pipeline, a line drop is respectively used on the two upper flange holes, and then the X-axis coordinate of the central point of the upper opening is obtained according to the positions of the two line drops.
3. The method for measuring the size of a large pipeline according to claim 1, wherein when the end face of the upper opening is an inclined face with respect to a horizontal plane, the specific operation of measuring the X-axis coordinate is as follows: and 2 upper flange holes are taken at the upper opening of the pipeline, the straight line where the 2 upper flange holes are positioned passes through the center point of the upper opening, a line weight is respectively used on the 2 upper flange holes, and the X-axis coordinate of the center point of the upper opening is obtained according to the positions of the 2 line weights.
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| CN201910254616.4A CN109827491B (en) | 2019-03-31 | 2019-03-31 | Method and device for measuring size of large pipeline |
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| CN201910254616.4A CN109827491B (en) | 2019-03-31 | 2019-03-31 | Method and device for measuring size of large pipeline |
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| CN109827491B true CN109827491B (en) | 2024-03-26 |
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| CN111735371B (en) * | 2020-06-23 | 2022-07-01 | 中国海洋石油集团有限公司 | Detection apparatus for marine riser checkpost axiality |
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