Search

CN-121989194-A - Drawing gauge suitable for equipment and pipeline tapping and use method

CN121989194ACN 121989194 ACN121989194 ACN 121989194ACN-121989194-A

Abstract

The invention provides a drawing instrument suitable for equipment and pipeline perforation and a using method thereof, belonging to the technical field of equipment and pipeline perforation, and comprising a base, a vertical rod mechanism, a ruler rod mechanism and a central shaft mechanism; the laser pen comprises a base, a central shaft mechanism, a ruler rod mechanism, a vertical rod mechanism and a laser pen sleeve, wherein the central shaft mechanism is arranged on the base, the ruler rod mechanism is connected with the central shaft mechanism through the vertical rod mechanism, the ruler rod mechanism rotates 360 degrees on the vertical rod mechanism, and the laser pen sleeve for installing a laser pen is arranged on one end part of the ruler rod mechanism. The invention has the advantages that the lower end of the base is provided with the magnet support, the magnet is adsorbed on equipment or a pipeline, the installation and the moving are simple and convenient, the original equipment pipeline is not damaged, the requirements on personnel theory and operation skill level are low, and the tapping precision can be effectively ensured. The ruler rod mechanism provided by the invention can adjust the length according to the pipe diameter of equipment or a pipe to be perforated, and can fix the laser pen for lofting, so that the original lofting procedure is omitted, and the lofting time is shortened.

Inventors

  • Jia Taofeng
  • WANG CHUANG
  • CHEN ZHIHAO
  • ZHANG WEI
  • ZHANG GAOFENG
  • WANG RUI

Assignees

  • 中国石油天然气第一建设有限公司
  • 中国石油工程建设有限公司
  • 中国石油天然气集团有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (10)

  1. 1. The drawing instrument suitable for the equipment and pipeline perforation is characterized by comprising a base (I), a pole setting mechanism (II), a pole setting mechanism (III) and a central shaft mechanism (IV), wherein the central shaft mechanism (IV) is arranged on the base (I), the pole setting mechanism (III) is connected with the central shaft mechanism (IV) through the pole setting mechanism (II), the pole setting mechanism (III) rotates at 360 degrees on the pole setting mechanism (II), and a laser pen sleeve (32) for installing a laser pen is arranged on one end part of the pole setting mechanism (III).
  2. 2. The drawing instrument suitable for the equipment and pipeline perforation is characterized in that the base (I) comprises rear supporting angle steel (2), front and rear supporting fixing rods (3), a front supporting plate (4), tool center line marks (5), support parallel adjusting wires (6) and rear adjusting wire nuts (7), the rear supporting angle steel (2) and the front supporting plate (4) are connected through the two front and rear supporting fixing rods (3), the tool center line marks (5) are arranged on the front supporting plate (4) and the rear supporting angle steel (2), the support parallel adjusting wires (6) are arranged at the tool center line marks (5) of the front supporting plate (4), the rear adjusting wire nuts (7) are arranged on vertical plates at the tool center line marks (5) of the rear supporting angle steel (2), and the upper end faces of the rear adjusting wires (7) are higher than the upper surfaces of the vertical plates of the rear supporting angle steel (2).
  3. 3. The drawing instrument for equipment and pipeline perforation according to claim 2, wherein the bottoms of the rear supporting angle steel (2) and the front supporting plate (4) are respectively provided with a magnet support (1).
  4. 4. The drawing instrument for equipment and pipeline perforation according to claim 2, wherein the bottom surfaces of the front supporting plate (4) and the rear supporting angle steel (2) are positioned on the same horizontal plane.
  5. 5. The drawing instrument for equipment and pipeline perforation according to claim 1, wherein the central shaft mechanism (IV) comprises a front central shaft sleeve (9), a central shaft angle measuring ruler (11), a central shaft central positioning line (12), a central shaft (13), a vertical rod angle measuring ruler (14), a vertical rod sleeve (15), a vertical rod angle positioning wire (16), a rear central shaft sleeve (17) and a central shaft adjusting screw (19); the front and rear ends of the central shaft (13) are respectively connected with a front central shaft sleeve (9) and a rear central shaft sleeve (17), a central shaft angle measuring ruler (11) is arranged on the front central shaft sleeve (9), a central shaft center positioning line (12) is arranged on the outer surface of the front end of the central shaft (13), a central shaft adjusting screw (19) is arranged at the center of the rear end part of the rear central shaft sleeve (17), a central shaft end plate (34) is arranged at the rear end part of the rear central shaft sleeve (17), a central shaft adjusting wire baffle (35) is arranged on the inner side of the middle part of the central shaft end plate (34), and one end of the central shaft adjusting screw (19) penetrates into the central shaft end plate (34) and is positioned in the rear central shaft sleeve (17); The vertical rod angle measuring ruler (14) is arranged on the outer side wall of the middle of the central shaft (13), the vertical rod angle measuring ruler (14) is semicircular, the vertical rod sleeve (15) is positioned in the middle of the semicircular vertical rod angle measuring ruler (14), and the vertical rod angle positioning wire (16) is arranged on the vertical rod sleeve (15).
  6. 6. The drawing instrument for equipment and pipeline perforation according to claim 5, wherein the central shaft (13) is fixedly connected with the front central shaft sleeve (9) through a front central shaft positioning wire (10), and the central shaft (13) is fixedly connected with the rear central shaft sleeve (17) through a rear central shaft positioning wire (18).
  7. 7. The drawing instrument for equipment and pipeline perforation according to claim 1, wherein the pole setting mechanism (II) comprises a perforation center positioning head (20), a telescopic pole setting (21), a connecting positioning rod (22), a pole setting angle pointer (23), a pole setting (25), a rotating sleeve (26), a ruler sleeve (27) and a primary ruler positioning wire (28); The vertical rod (25) is connected with a rotary sleeve (26) and a telescopic vertical rod (21) at the upper end and the lower end respectively, the lower end of the telescopic vertical rod (21) is connected with a hole center positioning head (20), the upper end of the rotary sleeve (26) is connected with a ruler sleeve (27), a primary ruler positioning wire (28) is arranged on the ruler sleeve (27), the lower part of the vertical rod (25) is connected with a central shaft mechanism (IV) through a connecting positioning rod (22), the connecting positioning rod (22) is vertically arranged with the vertical rod (25), a vertical rod angle pointer (23) is vertically arranged at one end of the connecting positioning rod (22), and the vertical rod angle pointer (23) is parallel to the vertical rod (25).
  8. 8. The drawing instrument for equipment and pipeline perforation according to claim 1, wherein the ruler rod mechanism (III) comprises a primary ruler rod (29) and a secondary ruler rod (31), one end of the secondary ruler rod (31) is positioned in the primary ruler rod (29) and is fixedly connected with the secondary ruler rod through a secondary ruler rod positioning wire (30), the other end of the secondary ruler rod (31) is connected with a laser pen sleeve (32), and the laser pen is fixedly arranged in the laser pen sleeve (32) through a laser pen positioning wire (33).
  9. 9. The method for using the drawing instrument for equipment and pipeline perforation according to any one of claims 1-8, which is characterized by comprising the following specific steps: Firstly, determining a center point of an opening position on a pipeline to be opened, and then drawing a bus passing through the center point, firstly, adjusting a vertical rod (25) to a required angle along a connecting and positioning rod (22), fixedly connecting the positioning rod (22) through a vertical rod angle positioning wire (16), then, mounting a laser pen to a laser pen sleeve (32), screwing a laser pen positioning wire (33), then, loosening a secondary ruler positioning wire piece (30), and adjusting the center distance from the laser pen to a ruler sleeve (27) according to the radius of the outer wall of equipment or the pipeline to be opened; Secondly, placing a drawing gauge suitable for equipment and pipeline tapping on equipment or a pipeline to be tapped, enabling the central line of a base (I) to overlap with a bus of the pipeline wall of the equipment or the pipeline to be tapped, adjusting a support parallel adjusting wire (6) according to the distance from the scale positions at the bottoms of a rear supporting angle steel (2) and a front supporting plate (4) to the axis of the pipeline wall, enabling the base (I) to be parallel to the pipeline wall of the equipment or the pipeline to be tapped, and then adjusting a central shaft adjusting screw (19) to drive a central shaft (13) to move so that a tapping center positioning head (20) coincides with the central point of the pipeline wall; Finally, the laser pen is opened, the ruler rod mechanism (III) is rotated to enable the ruler rod mechanism (III) to rotate 360 degrees around the vertical rod (25) through the rotary sleeve (26), marks are made on the path through which laser passes, and the marks are connected to obtain the actual opening pattern of the equipment or the pipeline to be opened.
  10. 10. A use method of a drawing gauge suitable for equipment and pipeline perforation is characterized in that when an eccentric angle exists between a nozzle to be installed and equipment or a pipeline to be perforated, the angle of a central shaft (13) of a regulating piece is consistent with the eccentric angle of a drawing paper according to a central shaft central positioning line (12), then a front central shaft positioning wire (10) and a rear central shaft positioning wire (18) of the regulating piece are screwed, then a telescopic vertical rod positioning wire (24) is loosened, the perforated central positioning head (20) is contacted with the wall, then the telescopic vertical rod positioning wire (24) is screwed, the whole drawing gauge is moved along the radial direction of the wall, the positioning head (20) coincides with the central point, and the central line of a base (I) is kept parallel to a bus of the wall of the equipment or the pipeline to be perforated.

Description

Drawing gauge suitable for equipment and pipeline tapping and use method Technical Field The invention belongs to the technical field of equipment and pipeline tapping, and particularly relates to a drawing gauge suitable for equipment and pipeline tapping and a use method thereof. Background The method is that the sheet metal is unfolded and lofted to obtain lofted data, then the data is measured at the position of the hole, and then the data is transplanted to the pipeline to draw the intersecting line on site, so as to determine the size of the hole. Although the requirement of opening holes can be met, the size lofting and intersecting line drawing process is long in time consumption, and the site construction efficiency is low. The precision of the site lofting and perforating is difficult to ensure effectively due to the difference of the types and the specifications of the connecting pipes, the difference of the skill levels of site operators and the like. Through retrieval, the prior patent (bulletin number: CN 207841293U) discloses a measuring and drawing gauge, which comprises a transverse ruler, scale marks are marked on the transverse ruler, two sliding sleeves are sleeved on the transverse ruler in a sliding manner, a first positioning device is arranged between the transverse ruler and the sliding sleeves, vertical rods are vertically and slidingly assembled on each sliding sleeve respectively, a second positioning device is arranged between each sliding sleeve and each vertical rod, a steel needle or a drawing pen is arranged at the lower end of each vertical rod, and a third positioning device is arranged between each vertical rod and each steel needle or drawing pen. The measuring and drawing gauge is suitable for annular surfaces with different heights at the center and the periphery, and can accurately draw lines of sector holes in the middle of the chain wheel model. Large static equipment and pipeline holes in the construction site in the petrochemical industry have the characteristics of multiple types, high precision requirement, irreversibility and the like. Especially, the tapping of large-scale pipeline and equipment often needs to use crane hoist and mount branch pipe after the tapping and compare, repair the mouth according to the reality again, repair the mouth and suitably carry out the branch pipe installation again. The following problems exist in this process: The personnel waste is serious, and 2 persons need about 2 hours for unfolding and lofting the large-scale branch pipe sheet metal on the construction site, and then about 1 hour is needed for transplanting the data, so that the manpower is seriously wasted. The panel beating expansion lofting is influenced by constructor individual ability level, produces the deviation easily, leads to the unable group to be right after the hoist and mount get up, need to repair the mouth according to actual deviation for the second time, polishes, increases crane and personnel's use, influences the time limit for a project. The manufacturing radian of the outer wall of the large-scale static equipment or the pipeline has deviation, so that the loft size has deviation. And if the gap between the welding seams is enlarged due to the repair of the openings, the welding quantity is increased, the use of people, materials and machines is wasted, and the construction quality is influenced. Disclosure of Invention In order to solve the problems of low accuracy and difficult construction of installation and tapping of large-scale static equipment and pipelines in the existing construction site, the invention provides a drawing gauge suitable for tapping equipment and pipelines and a use method thereof. The invention is simple and convenient to install and move by utilizing the magnets to adsorb on equipment or pipelines, does not hurt the pipelines of the original equipment, has low requirements on personnel theory and operation skill level, and can effectively ensure the tapping precision. The invention adopts the technical scheme that: The drawing instrument suitable for the equipment and pipeline perforation comprises a base, a vertical rod mechanism, a ruler rod mechanism and a central shaft mechanism, wherein the central shaft mechanism is arranged on the base, the ruler rod mechanism is connected with the central shaft mechanism through the vertical rod mechanism, the ruler rod mechanism rotates 360 degrees on the vertical rod mechanism, and a laser pen sleeve for installing a laser pen is arranged on one end part of the ruler rod mechanism. The base comprises rear supporting angle steel, front and rear supporting fixed rods, a front supporting plate, tool center line marks, support parallel adjusting wires and rear adjusting wire nuts, wherein the rear supporting angle steel is connected with the front supporting plate through the two front and rear supporting fixed rods, the tool center line marks are arranged on the front supporting