Portable pipeline positioning device and pipeline positioning method

Abstract

The portable pipeline positioning device and pipeline positioning method of the present invention, wherein the positioning device includes a main body and a circular arc steel pipe, the upper end surface of the main body is provided with a marking point and a compass, and the front end surface of the main body is provided with a bubble level. The pipeline positioning method of the present invention comprises: rotating the selected circular arc steel pipe and fitting it with the pipeline, moving the main body along the circumferential direction of the pipeline, so that the bubble of the bubble level is located directly below the marking point, and the position of the main body on the pipeline is the reference 0 point of the pipeline at this time; measuring the reference 0 point of the vertical pipeline, fitting the main body of the device with the drum front barrel, recording the direction indicated by the compass, and then rotating the selected circular arc steel pipe and fitting it with the pipeline to be inspected, moving the main body along the circumferential direction of the pipeline, so that the compass indicates the previously recorded position, and setting this position as the reference 0 point of the pipeline. The technical solution of the present invention is simple, and can quickly and accurately confirm the reference 0 point of the horizontally arranged and vertically arranged pipelines.

Description

Technical Field

[0001] The invention relates to a device used in a pipe or a pipe system, and in particular to a portable pipeline positioning device and a pipeline positioning method. Background Art

[0002] A large number of pressure pipes are used to transport steam, water and other media in the power plant system. Pipes are connected by welding. According to various regulations and standards, non-destructive testing of internal defects in pipeline welds is required regularly to ensure that the weld quality meets the standard requirements and thus ensure production safety.

[0003] The main non-destructive testing methods for internal defects in pipeline welds include conventional X-ray and ultrasonic testing, as well as TOFD and phased array testing developed in recent years. Sometimes a single method is selected for testing and rating, and sometimes a combination of multiple methods is selected for testing and rating. When recording defects in a weld, the horizontally arranged pipeline usually takes the top as the reference 0 point, and measures the position of the defect in the circumference of the weld in a clockwise direction along the flow direction of steam and water; the vertically arranged pipeline takes the steam drum in front of the furnace as the reference 0 point, and measures the position of the defect in the circumference of the weld in a clockwise direction along the flow direction of steam and water. In the actual detection process, the confirmation of the reference 0 point is determined by visual inspection and then marked with a marker. This leads to a large error in confirming the reference 0 point, and then the 0 point marked by the marker will slowly disappear due to factors such as operation during detection, the formation of oxide scale, and the brushing of paint. The reference 0 point must be confirmed again during the next cycle of detection, which results in a large error, resulting in the marking of the defect position not being repeatable.

[0004] Therefore, a device and method for accurately confirming the reference 0 point of horizontally and vertically arranged pipelines are designed. First, a unified reference 0 point is provided for positioning when various nondestructive testing methods are used to detect defects; second, the position standard can be repeated when it is necessary to detect record defects inside the weld in subsequent testing cycles to confirm whether the defects have expanded. Summary of the invention

[0005] The purpose of the present invention is to provide a portable pipeline positioning device and a pipeline positioning method which can accurately confirm the reference 0 point of a horizontally arranged and vertically arranged pipeline.

[0006] The portable pipeline positioning device of the present invention includes a main body and a circular arc steel pipe for circumferentially fitting the pipeline, the circular arc steel pipe passes through the main body from the left side and the right side, the main body is located in the middle of the circular arc steel pipe, and a marking point and a compass for marking a reference 0 point are provided on the upper end face of the main body, the axis of the compass and the marking point are both on the central axis of the upper end face of the main body, and a bubble level is provided on the front end face of the main body. When the main body is in a horizontal state, the bubble of the bubble level is located directly below the marking point.

[0007] The portable pipeline positioning device of the present invention is characterized in that the main body is provided with a plurality of through holes extending from the left side surface of the main body to the right side surface of the main body, and there are a plurality of circular arc steel pipes with different curvature radii to correspond to pipelines of different diameters. The plurality of circular arc steel pipes correspond one by one to the plurality of through holes respectively, and the plurality of circular arc steel pipes respectively pass through the corresponding through holes and are rotatably installed on the main body.

[0008] The portable pipeline positioning device of the present invention, wherein the main body is in the shape of a rectangular parallelepiped, the main body is 36 mm long, 14 mm wide, and 25 mm high, the diameter of the compass is 14 mm, the bubble level is 14 mm long, 3 mm wide, and 5 mm deep, there are six through holes on the main body, the diameter of the through holes is 2.2 mm, there are six circular arc steel pipes, the curvature radii of the six circular arc steel pipes are 16 mm, 38 mm, 79.5 mm, 109.5 mm, 161.5 mm, and 254 mm respectively, the diameter of the circular arc steel pipe is 2 mm, and it can rotate in the through hole.

[0009] The pipeline positioning method of the present invention comprises: using the portable pipeline positioning device of the present invention to measure the reference 0 point of the horizontal pipeline, selecting arc steel pipes with suitable curvature radius according to pipelines of different specifications, rotating other arc steel pipes to a horizontal state, rotating the selected arc steel pipe and fitting it with the pipeline, moving the main body along the circumferential direction of the pipeline so that the bubble of the bubble level is located directly below the marking point, and at this time, the position of the main body on the pipeline is the reference 0 point of the pipeline.

[0010] The pipeline positioning method of the present invention comprises: using the portable pipeline positioning device of the present invention to locate the reference 0 point of the vertical pipeline, rotating all arc steel pipes to a horizontal state in front of the steam drum, making the rear side of the main body fit in front of the steam drum, recording the direction indicated by the compass, and setting the compass indicated position of the main body on the steam drum as the reference 0 point of the pipeline;

[0011] According to the different specifications of pipelines, select arc steel pipes with appropriate curvature radius, rotate other arc steel pipes to a vertical state, rotate the selected arc steel pipe and fit it to the pipeline, move the main body along the circumferential direction of the pipeline, so that the direction of the pointer in the compass is the same as the previously indicated direction. At this time, the position of the main body on the pipeline is the benchmark 0 point of the pipeline.

[0012] The technical solution of the present invention is simple and convenient, and can quickly and accurately confirm the reference 0 point of the horizontally arranged and vertically arranged pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of a schematic diagram of the structure of the portable pipeline positioning device of the present invention;

[0014] Figure 2 A top view of a structural schematic diagram of a portable pipeline positioning device of the present invention;

[0015] Figure 3 It is a right view of the structural schematic diagram of the portable pipeline positioning device of the present invention. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 , Figure 3 As shown, the portable pipeline positioning device of the present invention includes a main body 1 and a circular arc steel pipe 2 for circumferentially fitting the pipeline, the circular arc steel pipe passes through the main body from the left side and the right side, the main body is located in the middle of the circular arc steel pipe, and a marking point 3 for marking a reference 0 point and a compass 4 are provided on the upper end face of the main body, the axis of the compass and the marking point are both on the central axis of the upper end face of the main body, and a bubble level 5 is provided on the front end face of the main body, and when the main body is in a horizontal state, the bubble of the bubble level is located directly below the marking point.

[0017] The portable pipeline positioning device of the present invention is characterized in that the main body is provided with a plurality of through holes 6 extending from the left side surface of the main body to the right side surface of the main body, and the plurality of circular arc steel pipes have different curvature radii to correspond to pipelines of different diameters. The plurality of circular arc steel pipes correspond one by one to the plurality of through holes respectively, and the plurality of circular arc steel pipes respectively pass through the corresponding through holes and are rotatably installed on the main body.

[0018] The portable pipeline positioning device of the present invention, wherein the main body is a rectangular parallelepiped, the main body is 36mm long, 14mm wide, and 25mm high, the diameter of the compass is 14mm, the bubble level is 14mm long, 3mm wide, and 5mm deep, there are six through holes on the main body, the diameter of the through holes is 2.2mm, there are six arc steel pipes, and the curvature radii of the six arc steels are 16mm, 38mm, 79.5mm, 109.5mm, 161.5mm, and 254mm respectively. The diameter of the arc steel pipe is 2mm and can rotate in the through hole.

[0019] The pipeline positioning method of the present invention comprises: using the portable pipeline positioning device of the present invention to measure the reference 0 point of the horizontal pipeline, selecting arc steel pipes with suitable curvature radius according to pipelines of different specifications, rotating other arc steel pipes to a horizontal state, rotating the selected arc steel pipe and fitting it with the pipeline, moving the main body along the circumferential direction of the pipeline so that the bubble of the bubble level is located directly below the marking point, and at this time, the position of the main body on the pipeline is the reference 0 point of the pipeline.

[0020] The pipeline positioning method of the present invention comprises: using the portable pipeline positioning device of the present invention to measure the reference 0 point of the vertical pipeline, rotating all arc steel pipes to a horizontal state in front of the steam drum, making the rear side of the main body fit in front of the steam drum, recording the direction indicated by the compass, and setting the compass indicated position of the main body on the steam drum as the reference 0 point of the pipeline;

[0021] According to the different specifications of pipelines, select arc steel pipes with appropriate curvature radius, rotate other arc steel pipes to a vertical state, rotate the selected arc steel pipe and fit it to the pipeline, move the main body along the circumferential direction of the pipeline, so that the direction of the pointer in the compass is the same as the previously indicated direction. At this time, the position of the main body on the pipeline is the benchmark 0 point of the pipeline.

[0022] The portable pipeline positioning device of the present invention is easy to use and can quickly and accurately confirm the reference 0 point of the horizontally arranged and vertically arranged pipelines.

[0023] The main body specifications of the portable pipeline positioning device of the present invention are 36mm long, 14mm wide and 25mm high. A compass with a diameter of 14mm is installed on the upper end, and a level with a length of 14mm, a width of 3mm and a depth of 5mm is installed on the side. Six through holes with a diameter of 2.2mm are arranged on the front of the main body. Six bent cylindrical steel rods (arc steel pipes) with a diameter of 2mm are respectively passed through the corresponding through holes. The steel rods will not fall off from the through holes and can rotate in the through holes. The curvature radii of the six steel rods are R16mm, R38mm, R79.5mm, R109.5mm, R161.5mm and R254mm respectively, and the corresponding measurable pipeline outer diameters are Do32mm, Do76mm, Do159mm, Do219mm, Do323mm and Do508mm respectively, which are all standard specifications of steam and water pipelines in power plants, and cylindrical steel rods with a small curvature radius can be used on pipelines with slightly larger outer diameters.

[0024] The method for locating a pipeline using the portable pipeline locating device of the present invention comprises:

[0025] 1. Confirmation of 0 point of horizontally arranged pipeline

[0026] According to the different specifications of pipelines, select cylindrical steel rods with appropriate curvature radius, rotate other cylindrical steel rods to a horizontal position, rotate the selected steel rod to fit the pipeline, move the device along the circumference of the pipeline, so that the bubble in the level coincides with the reference 0 point marked on the device body. This position is the horizontal reference 0 point of the pipeline.

[0027] 2. Confirmation of the 0 point of vertically arranged pipelines

[0028] The reference 0 point of the vertically arranged pipeline is the steam drum in front of the furnace as the reference 0 point. Therefore, before using this device, you need to go to the position of the steam drum on the furnace top, the position of the steam turbine casing, the main column, or any other place that can be used as the direction in front of the furnace, rotate all cylindrical steel bars to a horizontal position, make the rear side of the main body fit in front of the steam drum, record the direction indicated by the compass, and set the compass indicated position of the main body on the steam drum as the reference 0 point of the pipeline;

[0029] According to the different specifications of pipelines, select cylindrical steel rods with appropriate curvature radius, rotate other cylindrical steel rods to a vertical position, rotate the selected steel rod to fit the pipeline, and move the device along the circumference of the pipeline so that the pointer in the compass indicates the previously measured 0 point in the direction of the furnace. This position is the horizontal 0 point of the pipeline.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A portable pipeline positioning device, characterized in that: It comprises a main body and a circular arc steel pipe for circumferentially fitting the pipeline, the circular arc steel pipe passes through the main body from the left side and the right side, the main body is located in the middle of the circular arc steel pipe, a marking point and a compass for marking the reference 0 point are arranged on the upper end surface of the main body, the axis of the compass and the marking point are both on the central axis of the upper end surface of the main body, a bubble level is arranged on the front end surface of the main body, and when the main body is in a horizontal state, the bubble of the bubble level is located directly below the marking point; The main body is provided with a plurality of through holes extending from the left side surface of the main body to the right side surface of the main body. There are a plurality of circular arc steel pipes, and the curvature radii of the plurality of circular arc steel pipes are different to correspond to pipes of different diameters. The plurality of circular arc steel pipes correspond one by one to the plurality of through holes, respectively. The plurality of circular arc steel pipes respectively pass through the corresponding through holes and are rotatably installed on the main body.

2. The portable pipeline positioning device according to claim 1, characterized in that: The main body is in the shape of a rectangular parallelepiped, which is 36mm long, 14mm wide and 25mm high. The diameter of the compass is 14mm. The bubble level is 14mm long, 3mm wide and 5mm deep. There are six through holes on the main body with a diameter of 2.2mm. There are six circular arc steel pipes with curvature radii of 16mm, 38mm, 79.5mm, 109.5mm, 161.5mm and 254mm respectively. The diameter of the circular arc steel pipe is 2mm and it can rotate in the through hole.

3. A pipeline positioning method, characterized in that: include: The portable pipeline positioning device as described in claim 1 is used to measure the reference 0 point of the horizontal pipeline, and arc steel pipes with appropriate curvature radius are selected according to pipelines of different specifications. Other arc steel pipes are rotated to a horizontal state, and the selected arc steel pipe is rotated and fits with the pipeline. The main body is moved along the circumferential direction of the pipeline so that the bubble of the bubble level is located directly below the marking point. At this time, the position of the main body on the pipeline is the reference 0 point of the pipeline.

4. A pipeline positioning method, characterized in that: include: The portable pipeline positioning device as claimed in claim 1 is used to measure the reference 0 point of the vertical pipeline. In front of the steam drum, all arc steel pipes are rotated to a horizontal state, so that the rear side of the main body is in contact with the front of the steam drum, the direction indicated by the compass is recorded, and the compass indicated position of the main body on the steam drum is set as the reference 0 point of the pipeline; According to the different specifications of pipelines, select arc steel pipes with appropriate curvature radius, rotate other arc steel pipes to a vertical state, rotate the selected arc steel pipe and fit it to the pipeline, move the main body along the circumferential direction of the pipeline, so that the direction of the pointer in the compass is the same as the previously indicated direction. At this time, the position of the main body on the pipeline is the benchmark 0 point of the pipeline.

Images