A method for manufacturing and installing a penetration component of a steam valve group unit of an oil tanker

Abstract

The present invention relates to a manufacturing and installation method for the penetration piece of an oil tanker steam valve group unit, ensuring that the distance from the bottom of the tooling web to the tip of the stud is the same as the flange-to-web dimension in the drawing, confirming that the 4 studs of the tooling are on the same plane, ensuring that the adjusted slope is consistent with the slope of the ship's main deck; ensuring that the reference steel plate surface of the placed tooling is vertical or the pipe is horizontal, and fitting and positioning the web with the tooling studs; assembling and checking the end flange to complete the pipe manufacturing; ensuring that the dimensions of the upper half of the simulated penetration piece are consistent with the slope of the simulated main deck; ensuring that the reference plane of the simulated penetration piece is horizontal; locking each pipe of the unit and the simulated penetration piece with 2 bolts to complete the assembly of the unit; ensuring that the distance between the simulated penetration piece and the deck is consistent with the slope of the simulated main deck; inserting the sleeve into the hole for installation, ensuring that the 4 studs of the tooling are completely in contact with the deck, and the flange holes are parallel to the rib positions, and finally completing the positioning and installation. The advantages of the present invention are: improving the accuracy and efficiency.

Description

Technical Field

[0001] The invention relates to the field of oil tanker steam valve groups, and in particular to a method for manufacturing and installing a penetration component of an oil tanker steam valve group unit. Background Art

[0002] The short distance between the steam valve unit and the deck penetration made it difficult to install a closing pipe, preventing a seamless connection between the two and requiring pipe replacement later. The original solution was to configure the penetration with a loose web and weld it on-site later, but this still required pipe replacement in most units.

[0003] Due to the characteristics of this penetration part with a large number of pipes and small gaps, it is difficult to manufacture the web penetration part with multiple angles and tubes, and to accurately control the slope of the web, the single and double eyes of the flange, and the size of the web midship distance from the flange end face on one surface; in addition, the assembly of the unit is based on the bracket, and the single and double eyes and height of the flange connected to the deck are left to nature. It is impossible to determine whether the steam valve group unit and the deck penetration part can be docked in the early stage, and there is a risk of unqualified quality of the unit module.

[0004] Unit modules are now being used more and more widely. In this context, it is necessary to control the assembly accuracy of unit modules. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a high-precision and high-efficiency method for manufacturing and installing the penetration parts of the steam valve group unit of the oil tanker in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a method for manufacturing and installing a tank penetration component of a steam valve group unit of an oil tanker, characterized by comprising the following steps:

[0007] S1. Determine the tooling that the flange standard is consistent with the drawing;

[0008] S2. According to the production drawing, adjust the distance between the studs to ensure that the distance from the bottom of the tooling web to the stud tip is the same as the distance from the flange to the web in the drawing. Confirm that the four studs of the tooling are on the same surface and ensure that the adjusted slope is consistent with the slope of the ship's main deck;

[0009] S3. Pre-tack weld the single-sided flange of each pipe of the quadruple or multi-joint penetration fittings to be assembled, then bolt the fixture to the pipe flanges. Install the web onto the pipe with the fixture, raise the side installation platform, align the pipe, ensure the fixture reference steel plate is vertical or the pipe is horizontal, and then fit the web onto the fixture studs to position it.

[0010] S4. Assemble and calibrate the end flange to complete the pipe production;

[0011] S5. According to the production drawing, calculate the distance between the deck surface and the lower flange of the unit, and adjust the tooling to ensure that the upper half dimensions of the simulated penetration piece and the slope of the simulated main deck are consistent;

[0012] S6. Randomly select a place in the area for assembling the steam valve group unit, draw the rib position line, the ship center line, the transplantation installation line of the steam valve group unit support, and the distance line between the edge of the support angle steel and the web edge of the connecting unit penetration piece;

[0013] S7. Place the upper half tooling and the support of the adjusted simulated unit connecting penetration piece at the installation position, and spot-weld the tooling and the support to fix them, ensuring that the reference surface of the simulated penetration piece is horizontal;

[0014] S8. Lock each pipe of the unit and the simulated penetration piece with 2 bolts, and finally complete the assembly of the unit in the normal order from bottom to top;

[0015] S9. According to the drawing, calculate the distance between the lower end face of this pipe flange and the deck surface, and adjust the tooling to ensure that the distance between the simulated penetration piece and the deck and the slope of the simulated main deck are consistent;

[0016] S10. Draw the ship center line and the rib position line of the pipe center of this casing penetration piece, then align the simulated tooling with this pipe flange and tighten it with 2 - 4 bolts;

[0017] S11. Insert the casing into the hole for installation, ensure that the 4 stud bolts of the tooling are completely in contact with the deck, the flange holes are parallel to the rib positions, and finally complete the positioning installation.

[0018] Furthermore, in step S5, the distance between the deck surface and the lower flange of the unit is the dimension from the deck surface to the reference upper surface of the simulated penetration piece, and this dimension = the dimension marked on the production drawing + (web thickness - 2 mm).

[0019] Furthermore, in step S9, the distance between the lower end face of the flange and the deck surface is the dimension from the deck surface to the reference upper surface of the simulated penetration piece, and this dimension = the dimension marked on the production drawing - flange thickness.

[0020] Compared with the prior art, the advantages of the present invention are as follows: The installation method designs a profiling tooling for the steam valve group unit, conducts in - field assembly manufacturing of the penetration piece of the unit, and in the out - field, with the help of this tooling, simulates the inclined deck and the connecting penetration piece where the steam valve group unit is located, and controls the unit assembly, improving the precision, efficiency, and installation quality. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the stud bolt and the web in the embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the profiling tooling for the steam unit penetration piece in the embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the template tooling for the single - link casing penetration piece in the embodiment of the present invention. Detailed implementation manners

[0024] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0025] As Figures 1-3 shown, the manufacturing and installation method of the penetration piece of the tanker steam valve group unit in this embodiment includes the following steps:

[0026] S1. Determine the tooling with the flange standard consistent with the drawing;

[0027] S2. According to the manufacturing drawing, adjust the distance of the detachable shrinkable stud 1 with M10 - 20mm, ensure that the distance from the bottom surface of the tooling web 2 to the tip of the stud 1 is the same as the flange distance from the web 2 in the drawing, confirm that the 4 studs 1 of the tooling are on one plane, and ensure that the adjusted slope is consistent with the slope of the ship - shaped main deck 3;

[0028] S3. Spot - weld the single - side flange of each pipe of the quadruple or multi - link penetration piece to be assembled in advance, then lock the tooling and the pipe flange with bolts, then install the web 2 on the pipe with the tooling, place the platform for side - mounting in the raised side, align the pipes, ensure that the reference steel plate surface of the placed tooling is vertical or the pipes are horizontal, and then fit and position the web 2 with the tooling stud 1;

[0029] S4. Assemble and proofread the end flange to complete the pipe manufacturing;

[0030] S5. Unit module assembly and installation method - Refer to Figure 2 , according to the manufacturing drawing and calculate the distance from the deck 3 surface to the lower - end flange of the unit. This distance from the deck 3 surface to the lower - end flange of the unit is the dimension from the reference upper surface of the simulated penetration piece, and this dimension = the dimension marked in the manufacturing drawing+(the thickness of the web 2 - 2mm), and adjust the tooling to ensure that the upper - half dimension of the simulated penetration piece and the slope of the simulated main deck 3 are consistent;

[0031] S6. Randomly select a place in the area for assembling the steam valve group unit (simulating the deck slope), draw the rib position line, the ship's mid - line, the steam valve group unit support transplantation installation line, and the distance line between the edge of the support angle steel and the edge of the web 2 connecting the unit penetration piece;

[0032] S7. Place the adjusted upper - half tooling and support of the simulated unit connecting the penetration piece in the installation position, and spot - weld and fix the tooling / support to ensure that the reference surface of the simulated penetration piece is horizontal;

[0033] S8. Lock each pipe of the unit and the simulated penetration piece with 2 bolts, and finally complete the assembly of the unit in the normal order from bottom to top;

[0034] S9. Installation and positioning simulation tooling for single-joint sleeve through-hull parts, for reference Figure 3 , generally, a double-eye tooling is preferably used. Calculate the distance between the lower end face of this pipe flange and the deck surface 3 according to the drawing. The distance between the lower end face of this flange and the deck surface 3 is the distance from the reference upper surface of the simulated through-hull part. This dimension = the dimension marked on the manufacturing drawing - the flange thickness, and adjust the tooling to ensure that the distance between the simulated through-hull part and the deck surface 3 and the slope of the simulated main deck 3 are consistent;

[0035] S10. Mark the ship centerline and rib position line in the middle of the pipe of this sleeve through-hull part, then align the simulation tooling with this pipe flange and tighten it with 2 - 4 bolts;

[0036] S11. Insert the sleeve into the hole for installation, ensure that the 4 studs 1 of the tooling are completely in contact with the deck surface 3, and the flange holes 4 are parallel to the rib positions. Finally, complete the positioning installation.

[0037] In the installation method of this embodiment, the in-field template manufacturing method is used to assemble the through-hull parts of the steam valve group unit to ensure that the web angle, flange double eyes, and multi-pipe flanges are on the same plane; the out-field simulation installation method is used to assemble the connecting through-hull parts between the steam valve group units, simulate the inclined deck and the connecting through-hull parts at the location, and ensure seamless docking between the unit and the through-hull part in the later stage.

[0038] The installation method of this embodiment has wide applicability and can be used for the production of all web through-hull parts with angles. It can be used alone for the installation of single-joint through-hull parts in the pre-assembly stage of sections (note: the section is not horizontal, and it is impossible to use a spirit level / plumb bob tool. In case of inverted pipes and side-mounted situations), for the installation of sleeve through-hull parts, vent pipes, measuring pipes, sampling pipes, etc. of web through-hull parts located on the arch beam deck, and for the installation control of radar sounding pipes, washing machine pipes with high connection requirements to equipment.

[0039] The installation method of this embodiment is convenient to use, simple to operate, can flexibly simulate the deck slope, covers the dimension adjustment range of 100 - 800 mm between the flange surface and the web, combines manufacturing and installation, is compatible with single-joint for double-joint, four-joint, and super-four multi-joint composites, and has multiple functions.

Claims

1. A method for manufacturing and installing a through-hull component of a steam valve unit for an oil tanker, characterized in that It includes the following steps: S1. Determine the tooling with the flange standard consistent with the drawing; S2. According to the production drawing, adjust the stud distance to ensure that the distance from the bottom of the tooling web to the stud tip is the same as the flange distance from the web in the drawing. Confirm that the 4 studs of the tooling are on the same plane, and ensure that the adjusted slope is consistent with the slope of the ship-shaped main deck; S3. Spot-weld the single-sided flange of each pipe of the quadruple or multi-pipe through-hull component to be assembled in advance. Then lock the tooling and the pipe flange with bolts. Then install the web on the pipe with the tooling, place the platform for side installation according to the elevated side, and align the pipes. Ensure that the reference steel plate surface of the placed tooling is vertical or the pipe is horizontal, and then fit and position the web with the tooling studs; S4. Assemble and align the end flange to complete the pipe production; S5. According to the production drawing, calculate the distance from the deck surface to the lower end flange of the unit, and adjust the tooling to ensure that the dimensions of the upper half of the simulated through-hull component and the slope of the simulated main deck are consistent; S6. Randomly select a place in the area for assembling the steam valve group unit, and draw the rib position line, the ship center line, the transplant installation line of the steam valve group unit support, and the distance line between the edge of the support angle steel and the edge of the web connecting the unit through-hull component; S7. Place the adjusted upper half of the tooling and the support connecting the simulated unit through-hull component at the installation position, and spot-weld the tooling and the support to fix them, ensuring that the reference surface of the simulated through-hull component is horizontal; S8. Lock each pipe of the unit and the simulated through-hull component with 2 bolts. Finally, complete the assembly of the unit in the order of first bottom then top; S9. According to the drawing, calculate the distance dimension from the lower end face of the pipe flange to the deck surface, and adjust the tooling to ensure that the distance from the simulated through-hull component to the deck and the slope of the simulated main deck are consistent; S10. Draw the ship center line and the rib position line in the middle of the pipe of this sleeve through-hull component, then align the simulated tooling with this pipe flange and tighten it with 2 - 4 bolts; S11. Insert the sleeve into the hole for installation, ensure that the 4 studs of the tooling are completely in contact with the deck, the flange holes are parallel to the rib positions, and finally complete the positioning installation; 2. The method for installing a penetration component of a steam valve group unit of an oil tanker according to claim 1, characterized in that: In step S5, the distance from the deck surface to the lower end flange of the unit is the dimension from the reference upper surface of the simulated through-hull component, and this dimension = the dimension marked on the production drawing + (web thickness - 2mm).

3. The installation method of the penetration piece of the tanker steam valve group unit according to claim 1, characterized in that: In step S9, the distance dimension from the lower end face of the flange to the deck surface is the dimension from the reference upper surface of the simulated through-hull component, and this dimension = the dimension marked on the production drawing - flange thickness.

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