Rapid opening aligning and positioning method for pipelines to be connected

Abstract

The invention discloses a quick opening aligning and positioning method for pipelines to be connected, and relates to the technical field of pipeline construction. The method comprises the following steps: firstly, preliminarily determining the cutting range of a target pipe section, balancing and comparing a prefabricated part, then fixing a positioning ruler with a 00 'occlusion side, a 11' flush line and a 22 'coplanar confirmation line at the end part of the prefabricated part, fixing a cross curve infrared laser source, confirming that the laser source is coplanar with the end surface of the prefabricated part through the 22' line, adjusting to be flush, marking, cutting and cleaning. And finally, the prefabricated part and the target pipe section are pre-fixed, welded and inspected. The method combines the laser and the positioning rule, improves the positioning accuracy and the working efficiency, is convenient to operate, solves the problems of experience dependence, long time consumption and large error in the prior art, and is suitable for scenes of new and old connection, transfer connection and the like of municipal pipelines.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe connection and alignment, and particularly relates to a method for quickly aligning and positioning a pipe to be connected. BACKGROUND

[0002] Municipal pipes often need to be connected, old pipes need to be connected, and new pipes need to be connected. Most of the time, the target pipe section needs to be "appropriately" cut and removed according to the relative position of the prefabricated part and the target pipe section, so that the connection port of the target pipe can be aligned with the connection port of the prefabricated part. After many actual field operations, it is found that the positioning, marking, cutting and alignment of the prefabricated part and the target pipe section are relatively time-consuming, and there may be large errors and deviations, which brings certain difficulties to the efficiency and safety of pipe connection work.

[0003] The prior art has the following disadvantages: (1) In the actual operation process of marking and cutting the target pipe section, the dependence on experience is still large, and relative errors are easy to occur, resulting in "the gap between the connection port of the target pipe section and the alignment port of the prefabricated part does not meet the expectation" after cutting; (2) The positioning and marking process of the current alignment method mainly relies on subjective visual judgment, which consumes a lot of time, and the cooperation between workers cannot be divided, so "relative dynamic reference factors" are easy to cause confusion in field cooperation and cooperation, and increase the possibility of deviation and error.

[0004] (3) The current alignment positioning process is complicated, lacks a main line, is relatively vague, has great limitations, and has poor collimation. SUMMARY

[0005] The main purpose of the present application is to provide a method for quickly aligning and positioning a pipe to be connected, which aims to solve the existing technical problems.

[0006] To achieve the above purpose, the present application provides a method for quickly aligning and positioning a pipe to be connected, comprising the following steps, Preliminary determination of the cutting range of the target pipe section connection port: based on the connection requirements of the target pipe section to be connected and the prefabricated part, the approximate range of the connection port to be cut on the target pipe section is preliminarily determined; Balancing comparison of the prefabricated part: the prefabricated part and the target pipe section are preliminarily aligned, the position of the prefabricated part is adjusted, and the prefabricated part and the target pipe section are ensured to be in a relatively balanced state; The pipe end head scribing positioning ruler is fixed to the end of the prefabricated part: the pipe end head scribing positioning ruler is provided with a bite function side 00', a precise flush line 11' and a quick confirmation flush line 22', the bite function side 00' of the pipe end head scribing positioning ruler is standardized bitten with the end of the prefabricated part, and the precise flush line 11' is precisely flush with the pipe along the end of the prefabricated part; The fixed cross line infrared laser source: the cross line infrared laser source is fixed at a predetermined position, and the cross line infrared laser source can emit transverse laser SS' and vertical laser FD; The laser source and the flush line are combined to position: whether the cross line infrared laser source is coplanar with the end face of the prefabricated part is judged by the quick confirmation flush line 22', if the transverse laser SS' or the vertical laser FD does not shoot to the corresponding position of the quick confirmation flush line 22' of the internal arc surface on the other side of the prefabricated part, the position of the cross line infrared laser source is adjusted until the laser shoots to the corresponding position, and the coplanar positioning is realized; Adjust and determine flush: according to the laser emitted by the cross line infrared laser source and the precise flush line 11', the relative position of the prefabricated part and the target pipe segment is further adjusted to ensure that the two are accurately positioned; Manual scribing ruler scribing: using a manual scribing ruler, a cutting scribing target position is marked on the target pipe segment according to the laser track of the cross line infrared laser source, the cutting scribing target position includes L2 cutting scribing target position CD of the target pipe segment to be connected and L1 cutting scribing target position C'D' of the target pipe segment to be connected; Cutting: according to the marked cutting scribing target position, the target pipe segment is cut, and the cutting segment C'D'M'M of the target pipe segment to be connected and the cutting segment CDN'N of the target pipe segment to be connected are cut off; Cleaning: the cutting surface of the cut target pipe segment and the connection port of the prefabricated part are cleaned to remove impurities and burrs generated during cutting; The prefabricated part and the target pipe segment are pre-fixed: the cleaned prefabricated part and the target pipe segment are connected, and the two are pre-fixed by a pre-set fixing method; Confirm and weld: check whether the pre-fixed position of the prefabricated part and the target pipe segment is accurate, and if there is no error, the connection port of the two is welded; Quality inspection: after welding, the welding quality is inspected to determine whether the welded pipe connection meets the pre-set quality standard.

[0007] Further, the precise flush line 11' and the quick confirmation flush line 22' of the pipe end head scribing positioning ruler in step 3 have a line width of 2-3 mm, and the pipe end head scribing positioning ruler is provided with a spaced hollow structure, so that the laser emitted by the cross line infrared laser source can pass through the hollow area corresponding to the quick confirmation flush line 22' and shoot to the internal arc surface on the other side of the prefabricated part.

[0008] Further, in step 5, when judging whether the cross-line infrared laser source is coplanar with the end face of the prefabricated part, it is necessary to ensure that the horizontal laser SS' and the vertical laser FD can both shoot to the fast confirmation flush line 22' corresponding position of the internal arc face of the other side of the prefabricated part.

[0009] Further, in step 7, when marking the cutting line target position, the cutting line target position needs to match the size of the prefabricated part joint, so as to ensure that the joint of the target pipe segment after cutting can be accurately connected with the joint of the prefabricated part.

[0010] Further, in step 10, the preset fixing mode includes at least one of the following: clamp fixing and temporary spot welding fixing.

[0011] Further, in step 12, the quality inspection includes appearance inspection, size inspection and sealing inspection, the appearance inspection needs to check whether there are defects such as pores, cracks and welding bumps at the welding position, the size inspection needs to measure the size deviation of the joint, and the sealing inspection needs to detect whether there is leakage in the welded pipeline.

[0012] Further, in step 2, when balancing and comparing the prefabricated part, a measuring tool such as a level or a tape measure can be used to assist in adjusting the position of the prefabricated part, so as to ensure the relative balance of the prefabricated part and the target pipe segment.

[0013] Further, in step 4, when fixing the cross-line infrared laser source, it is necessary to ensure that the emission direction of the cross-line infrared laser source is adapted to the axial direction of the prefabricated part, and the laser emission is stable without deviation.

[0014] The beneficial effects of the present application are embodied in: Improve positioning accuracy: through the combination of laser line and pipe end head line positioning ruler, the use of standardized occlusion of positioning ruler 00', accurate flush positioning of line 11', and confirmation of coplanar of laser source and prefabricated part end face by line 22', reduces the error of artificial subjective judgment, ensures the matching accuracy of cutting line and prefabricated part end position, and avoids the problem of inconsistent gap of joint after cutting. Improve work efficiency: simplify the positioning process, clearly define 12 standardized steps, reduce positioning and line drawing time, and make each person responsible for their own work, avoid confusion, and shorten the overall joint operation time. Convenient and labor-saving operation: the positioning ruler structure is designed to adapt to the end of the pipeline, the laser source is easy to adjust, no need to rely on rich experience, reduce the operation difficulty, save time and labor, at the same time, the collimation is reliable, which guarantees the operation safety and quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a schematic diagram for the rapid joint positioning method of the present application; Fig. 2 It is an enlarged schematic diagram of the pipe end head line positioning ruler structure and end face of the present application. Fig. 3 The schematic diagram of the beveling mode of the present application.

[0016] Explanation of reference signs: A: pipe end line setting ruler B: cross line infrared laser source L: prefabricated part L1, L2: target pipe sections to be connected CD: cutting line target position (welding line) of the target pipe section L2 to be connected C'D': cutting line target position (welding line) of the target pipe section L1 to be connected MM' / NN': front end of the target pipe sections to be connected before cutting EE': beveling mode (relatively less) FC (①'): vertical connection mode C'D'M'M: L1 cutout section CDN'N: L2 cutout section 00': occlusion function side of the line setting ruler, standard occlusion with the prefabricated part 11': along the "precise flush line" after occlusion of the positioning ruler with the pipe end of the prefabricated part 22': prefabricated part end face coplanar with the laser source "quick confirmation flush line" SS', FD: horizontal and vertical laser sources DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] Please refer to Figs. 1-3 The present application provides a method for quickly aligning and positioning a pipe to be connected, comprising the following steps, Preliminary determination of the cutting range of the target pipe section connection: based on the connection requirements of the target pipe section to be connected and the prefabricated part, the approximate range of the connection to be cut on the target pipe section is preliminarily determined; Prefabricated part balance comparison: the prefabricated part and the target pipe section are preliminarily aligned, the position of the prefabricated part is adjusted, and it is ensured that the prefabricated part and the target pipe section are in a relatively balanced state; Specifically, in this step, the preform is balanced and compared, and the position of the preform can be adjusted with the aid of measuring tools such as a level and a tape measure to ensure the relative balance of the preform and the target pipe section.

[0019] The pipe end line positioning ruler is fixed to the end of the preform: the pipe end line positioning ruler is provided with a bite function side 00', a precise flush line 11', and a quick confirmation flush line 22', the bite function side 00' of the pipe end line positioning ruler is standardized with the end of the preform, and the precise flush line 11' is precisely flush with the pipe along the end of the preform; Specifically, the line width of the precise flush line 11' and the quick confirmation flush line 22' of the pipe end line positioning ruler in this step is 2-3 mm, and the pipe end line positioning ruler is provided with a spaced hollow structure, so that the laser emitted by the cross line infrared laser source can pass through the corresponding hollow area of the quick confirmation flush line 22' to the internal arc surface on the other side of the preform.

[0020] Fix the cross line infrared laser source: fix the cross line infrared laser source at a predetermined position, and the cross line infrared laser source can emit horizontal laser SS' and vertical laser FD; Specifically, in this step, when fixing the cross line infrared laser source, it is necessary to ensure that the emission direction of the cross line infrared laser source is adapted to the axis direction of the preform, and the laser emission is stable without deviation.

[0021] Laser source and flush line joint positioning: judge whether the cross line infrared laser source and the end surface of the preform are coplanar through the quick confirmation flush line 22', if the horizontal laser SS' or the vertical laser FD does not shoot to the corresponding position of the quick confirmation flush line 22' on the internal arc surface on the other side of the preform, adjust the position of the cross line infrared laser source until the laser shoots to the corresponding position, and realize the coplanar positioning; Specifically, in this step, when judging whether the cross line infrared laser source and the end surface of the preform are coplanar, it is necessary to ensure that the horizontal laser SS' and the vertical laser FD can both shoot to the corresponding position of the quick confirmation flush line 22' on the internal arc surface on the other side of the preform.

[0022] Adjust and determine flush: further adjust the relative position of the preform and the target pipe section according to the laser emitted by the cross line infrared laser source and the precise flush line 11', to ensure accurate alignment of the two; Manual scribing ruler scribing: use a manual scribing ruler to mark a cutting scribing target position on the target pipe section according to the laser trajectory of the cross line infrared laser source, the cutting scribing target position includes L2 cutting scribing target position CD of the target pipe section to be connected and L1 cutting scribing target position C'D' of the target pipe section to be connected; Specifically, when marking the cutting and scribing target position in this step, the cutting and scribing target position must match the size of the prefabricated component joint to ensure that the joint of the cut target pipe section can be accurately connected with the joint of the prefabricated component.

[0023] Cutting: Cut the target pipe segment according to the marked cutting line target position, and cut off the cut section C'D'M'M of the L1 target pipe segment to be connected and the cut section CDN'N of the L2 target pipe segment to be connected; Cleaning: Clean the cut surface of the target pipe section and the joint of the prefabricated parts after cutting to remove impurities and burrs generated during cutting; Pre-fixing of prefabricated components and target pipe sections: Connect the cleaned prefabricated components to the target pipe sections and pre-fix them using a preset fixing method; Specifically, the preset fixing method mentioned in this step includes at least one of fixing with clamps or fixing with temporary spot welding.

[0024] Welding after confirmation: Check whether the pre-fixed position of the prefabricated component and the target pipe section is accurate. After confirming that there is no error, weld the joint between the two. Quality inspection: After welding is completed, the welding quality is inspected to determine whether the welded pipe joint meets the preset quality standards.

[0025] Specifically, the quality inspection in this step includes visual inspection, dimensional inspection, and sealing inspection. Visual inspection requires checking whether there are defects such as pores, cracks, and weld beads at the weld joint. Dimensional inspection requires measuring the dimensional deviation at the joint. Sealing inspection requires detecting whether there is any leakage in the welded pipe.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the figure. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for rapid alignment and positioning of pipelines to be connected, characterized in that: Includes the following steps, Preliminary determination of the cutting range of the target pipe section connection: Based on the connection requirements between the target pipe section to be connected and the prefabricated components, the approximate range of the connection points to be cut on the target pipe section is preliminarily determined; Precast component balance comparison: The precast component is initially aligned with the target pipe section, and the position of the precast component is adjusted to ensure that the precast component and the target pipe section are in a relatively balanced state; The pipe end marking and positioning ruler is fixed to the end of the precast component: The pipe end marking and positioning ruler is provided with an interlocking function side 00', a precise alignment line 11', and a quick confirmation alignment line 22'. The interlocking function side 00' of the pipe end marking and positioning ruler is standardized to interlock with the end of the precast component, so that the precise alignment line 11' is precisely aligned with the pipe edge of the end of the precast component. Fixed cross-shaped infrared laser source: The cross-shaped infrared laser source is fixed in a preset position. The cross-shaped infrared laser source can emit horizontal laser SSˊ and vertical laser FD. Laser source and alignment line joint positioning: By quickly confirming the alignment line 22', it is determined whether the cross infrared laser source and the end face of the preform are coplanar. If the horizontal laser SS' or the vertical laser FD does not reach the corresponding position of the quick confirmation alignment line 22' on the inner arc surface of the preform on the other side, the position of the cross infrared laser source is adjusted until the laser reaches the corresponding position to achieve coplanar positioning. Adjust and confirm alignment: Based on the laser emitted by the crosshair infrared laser source and the precise alignment line 11', further adjust the relative position of the prefabricated component and the target pipe section to ensure accurate alignment between the two; Manual scribing: Using a manual scribing ruler, the cutting and scribing target positions are marked on the target pipe section according to the laser trajectory of the cross-shaped infrared laser source. The cutting and scribing target positions include the cutting and scribing target position CD of the L2 target pipe section to be connected and the cutting and scribing target position C'D' of the L1 target pipe section to be connected. Cutting: Cut the target pipe segment according to the marked cutting line target position, and cut off the cut section C'D'M'M of the L1 target pipe segment to be connected and the cut section CDN'N of the L2 target pipe segment to be connected; Cleaning: Clean the cut surface of the target pipe section and the joint of the prefabricated parts after cutting to remove impurities and burrs generated during cutting; Pre-fixing of prefabricated components and target pipe sections: Connect the cleaned prefabricated components to the target pipe sections and pre-fix them using a preset fixing method; Welding after confirmation: Check whether the pre-fixed position of the prefabricated component and the target pipe section is accurate. After confirming that there is no error, weld the joint between the two. Quality inspection: After welding is completed, the welding quality is inspected to determine whether the welded pipe joint meets the preset quality standards.

2. The rapid alignment and positioning method for pipeline connections according to claim 1, characterized in that: In step 3, the line width of the precise alignment line 11' and the quick confirmation alignment line 22' of the pipe end marking and positioning ruler is 2~3mm, and the pipe end marking and positioning ruler is provided with an intermittent hollow structure so that the laser emitted by the cross infrared laser source can pass through the hollow area corresponding to the quick confirmation alignment line 22' and be projected onto the inner arc surface on the other side of the precast part.

3. The rapid alignment and positioning method for pipeline connections according to claim 1, characterized in that: In step 5, when determining whether the crosshair infrared laser source and the end face of the preform are coplanar, it is necessary to ensure that both the horizontal laser SSˊ and the vertical laser FD can be directed to the corresponding position of the quick confirmation line 22ˊ on the inner arc surface of the other side of the preform.

4. The rapid alignment and positioning method for pipe connections according to claim 1, characterized in that: When marking the cutting and scribing target position in step 7, the cutting and scribing target position must match the size of the prefabricated component joint to ensure that the joint of the cut target pipe section can be accurately connected with the joint of the prefabricated component.

5. The rapid alignment and positioning method for pipe connections according to claim 1, characterized in that: The preset fixing method mentioned in step 10 includes at least one of fixing with clamps and fixing with temporary spot welding.

6. The rapid alignment and positioning method for pipe connections according to claim 1, characterized in that: The quality inspection described in step 12 includes visual inspection, dimensional inspection and sealing inspection. Visual inspection requires checking whether there are defects such as pores, cracks and weld beads at the weld. Dimensional inspection requires measuring the dimensional deviation at the joint. Sealing inspection requires detecting whether there is any leakage in the pipe after welding.

7. The rapid alignment and positioning method for pipe connections according to claim 1, characterized in that: In step 2, when comparing the precast components, measuring tools such as a level and a tape measure can be used to help adjust the position of the precast components to ensure the relative balance between the precast components and the target pipe section.

8. The rapid alignment and positioning method for pipeline connections according to claim 1, characterized in that: When fixing the cross-shaped infrared laser source in step 4, it is necessary to ensure that the emission direction of the cross-shaped infrared laser source is compatible with the axial direction of the preform, and that the laser emission is stable and without deviation.

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