A method and device for assembling a pressure vessel tank and a pipe

Abstract

The method comprises the following steps: step 1, placing the tank outlet pipe, the tank inlet pipe and the gas phase pipe in the pipe group matching device simulation group matching tool, and fixing the outlet ends of the pipes to the first positioning mechanism of the simulation group matching tool; step 2, clamping and fixing the outlet pipe, the inlet pipe and the gas phase pipe on the pipe positioning mechanism, and welding the welds of the pipes respectively; step 3, taking out the pipes from the positioning and welding group matching tool respectively, and performing weld radiographic testing and pipe cleaning; and step 4, placing the outlet pipe, the inlet pipe and the gas phase pipe in the lifting group matching tool of the pipe group matching device, and welding the pipes to the tank to complete the group matching. The present application realizes the group matching of the interlayer pipe and the external pipe on the special tool, effectively guarantees the overall size of the pipe, provides a convenient condition for the weld welding, guarantees the weld quality, and improves the manufacturing efficiency.

Description

Technical Field

[0001] This invention relates to a pipeline assembly method, specifically to a method and apparatus for assembling pipelines for pressure vessels and tanks. Background Technology

[0002] Existing pressure vessel tanks often have a double-layered structure, such as... Figure 1 As shown, the space between the inner tank and the outer tank is called the interlayer, and the feed pipeline, after exiting the inner tank, must pass through the interlayer to reach the outside of the flat end cap I of the outer tank. For example... Figure 2 As shown, in the past, when manufacturing this type of tank container, the inner tank body was manufactured first and connected with the interlayer piping. During the assembly of the outer tank body's flat end cap I, the interlayer piping was led out from the positioning holes of the flat end cap. After assembling the skirt support II, the external piping within skirt support II was then assembled. To ensure the strength and safety of the piping and to meet relevant standards, the weld between the interlayer piping and the external piping is a butt weld with a V-groove. Radiographic testing is required after welding. Due to space constraints and structural interference, the butt weld between the interlayer piping and the external piping is completed in a confined space, requiring a long time and overcoming numerous difficulties to complete the radiographic testing. Furthermore, the strength test for both the interlayer piping weld and the butt weld with the external piping cannot be completed in one step, requiring an additional strength test, which significantly complicates the manufacturing process. Therefore, a new assembly method must be developed to ensure smooth piping assembly and guarantee piping strength and safety. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problems of difficult welding, radiographic inspection and cleaning after the assembly of sandwiched pipes and external pipes in the prior art. It provides a method and device for assembling pipes for pressure vessel tanks, so as to realize the assembly of sandwiched pipes and external pipes on special tooling, effectively ensuring the overall size of the pipes, providing convenient conditions for welding and radiographic inspection, ensuring weld quality and improving manufacturing efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A method for assembling piping in a pressure vessel tank is characterized by the following steps:

[0006] Step 1: Place the liquid outlet pipeline, liquid inlet pipeline, and gas phase pipeline of the tank container into the simulated assembly fixture of the pipeline assembly device. The inlet end of each pipeline is placed in the corresponding positioning hole of the fixture box of the simulated assembly fixture. The outlet of the flat head I and the outlet end of the pipeline are fixed to the first positioning mechanism of the simulated assembly fixture to complete the pipeline positioning and assembly.

[0007] Step 2: Clamp and fix the liquid outlet pipe, liquid inlet pipe, and gas phase pipe on the first positioning mechanism, and weld the welds of each corresponding pipe respectively;

[0008] Step 3, the welded liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline are taken out from the positioning welding group respectively, and the welding seam is radiographed and the pipeline is cleaned;

[0009] Step 4, the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline are placed in the lifting assembly device of the pipeline assembly device, the position of each pipeline is positioned and adjusted through the second positioning mechanism and lifting mechanism of the lifting assembly device, and when the relative position of each pipeline and the tank is matched, the pipeline is welded to the tank.

[0010] Further, the pipeline positioning in step 1 specifically includes:

[0011] Step 1.1, according to the three-dimensional size of the tank and the required position of the tank pipeline, the relative position of the tool box and the first positioning mechanism in the simulation assembly tool is matched, and the tool box and the first positioning mechanism are welded on the tool bottom plate;

[0012] Step 1.2, the inlet end of the liquid inlet pipeline and the gas phase pipeline is inserted into the positioning hole on the upper part of the tool box, and the inlet end of the liquid outlet pipeline is inserted into the positioning hole on the bottom surface of the tool box;

[0013] Step 1.3, the liquid outlet pipeline, gas phase pipeline and liquid inlet pipeline are respectively placed on the first positioning mechanism at the outlet of the flat head I and the outlet end of the pipeline to complete the pipeline positioning.

[0014] Further, step 4 specifically includes:

[0015] Step 4.1, place the tank in the tank roller frame, start the lifting mechanism, and detect by the laser leveler to align the engraved line of the centering mark plate on the lifting mechanism with the horizontal center line of the tank;

[0016] Step 4.2, the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline are respectively placed in the second positioning mechanism on the lifting mechanism at the outlet of the flat head I and the outlet end of the pipeline;

[0017] Step 4.2, the inlet end of the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline is respectively welded to the tank to complete the assembly.

[0018] Further, after step 4, step 5 is further included, after the welding assembly is completed, the lifting mechanism is lowered, the tank is transported to the strength test station, and the strength test of the tank and the pipeline is completed.

[0019] Further, in step 1.3, the liquid outlet pipeline, gas phase pipeline and liquid inlet pipeline are respectively positioned through the pipeline matching groove on the first positioning mechanism at the outlet of the flat head I and the outlet end of the pipeline.

[0020] A pressure vessel tank plus pipe line group matching device, which is characterized in that: comprising a simulation group matching tool for pipe line positioning and welding and a lifting group matching tool for pipe line and tank group matching;

[0021] The simulation group matching tool comprises a tool box, a tool bottom plate and a first positioning mechanism; the tool box and the first positioning mechanism are welded on the tool bottom plate, the upper part of the tool box is provided with positioning holes for positioning the inlet ends of the liquid inlet pipe line and the gas phase pipe line, and the side of the tool box is provided with positioning holes for positioning the inlet end of the liquid outlet pipe line; the first positioning mechanism comprises a plurality of positioning columns, the upper ends of the positioning columns correspond to the preset positions of the liquid outlet pipe line, the liquid inlet pipe line and the gas phase pipe line on the pressure vessel tank respectively, and are used for positioning the liquid outlet pipe line, the liquid inlet pipe line and the gas phase pipe line respectively.

[0022] The lifting group matching tool comprises a group matching tool base, a tank roller frame, a lifting mechanism and a second positioning mechanism; the tank roller frame and the lifting mechanism are welded on the tool base, and the vertical middle sections of the tank roller frame and the lifting mechanism are located on the same vertical plane; the second positioning mechanism comprises a plurality of positioning columns, the upper ends of the positioning columns correspond to the preset positions of the liquid outlet pipe line, the liquid inlet pipe line and the gas phase pipe line on the pressure vessel tank respectively, and are used for positioning the liquid outlet pipe line, the liquid inlet pipe line and the gas phase pipe line respectively.

[0023] Further, a centering mark plate is arranged on the lifting mechanism, and the centering mark plate corresponds to the vertical middle section of the tank roller frame.

[0024] Further, the upper ends of the positioning columns are circular arc curved surfaces which are adapted to the liquid outlet pipe line, the liquid inlet pipe line and the gas phase pipe line respectively.

[0025] Further, walking wheels are arranged at the bottom of the lifting mechanism, and the walking wheels are used for adjusting the centering of the pipe line and the tank.

[0026] Compared with the prior art, the present application has the following beneficial technical effects:

[0027] 1. The pressure vessel tank plus pipe line group matching method and the group matching device can effectively guarantee the overall size of the pipe line by matching the sandwich pipe line and the external pipe line on the special tool.

[0028] 2. The pressure vessel tank plus pipe line group matching method and the group matching device can effectively control the welding deformation of the pipe line by adopting the overall group matching and welding of the sandwich pipe line and the external pipe line.

[0029] 3. The pressure vessel tank plus pipe line group matching method can realize the separate ray detection of all the butt welding seams of the overall pipe line, thereby avoiding the difficulty in ray detection caused by the mutual interference and the narrow space of the pipe lines.

[0030] 4. The pressure vessel tank and pipe routing assembly method of the present application, the overall pipe routing is cleaned separately to ensure the manufacturing quality of the pipe routing; and the flat head and skirt assembly welding quality is ensured under the premise of ensuring the pipe routing assembly welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Fig. 1 is a schematic view of the end of the pressure vessel tank and the interlayer pipe routing in the background art of the present application;

[0032] Figure 2 Fig. 2 is a schematic view of the side of the pressure vessel tank and the interlayer pipe routing in the background art of the present application;

[0033] Figure 3 Fig. 3 is a schematic view of the simulation assembly tool of the pressure vessel tank and pipe routing assembly device embodiment of the present application;

[0034] Figure 4 Fig. 4 is a schematic view of the A direction of Figure 3

[0035] Figure 5 Fig. 5 is a schematic view of the lifting assembly tool of the pressure vessel tank and pipe routing assembly device embodiment of the present application;

[0036] Figure 6 Fig. 6 is a schematic view of the B direction of the lifting mechanism in Figure 5

[0037] The reference signs are explained as follows:

[0038] 1 - liquid outlet pipe, 2 - liquid inlet pipe, 3 - gas phase pipe, 4 - tool box, 5 - tool base plate, 6 - first positioning mechanism, 7 - tool base, 8 - tank roller frame, 9 - lifting mechanism, 10 - second positioning mechanism, 11 - centering mark plate. DETAILED DESCRIPTION

[0039] The present application will be described in detail below with reference to the drawings and specific embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. In the description of the present application, it should be noted that the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] ​​The pressure vessel tank box adds the pipe road group method of the application, designs special pipe road simulation group tooling, makes opening on tooling box 4, and welds tank box joint, designs first positioning mechanism 6 of each interlayer pipe road at flat head outlet and each skirt inner and outer pipe road outlet on simulation group tooling, makes its outlet consistent with tank box interlayer outlet, also makes its size in X, Y, Z three directions meet the requirement of drawing. Tank box liquid outlet pipe 1, liquid inlet pipe 2 and gas phase pipe 3 are grouped on simulation group tooling, the design size of tooling is basically consistent with drawing, and is designed with clamping device, guarantees that each pipe road can meet the requirement of tank box after grouping on tooling, after each pipe road grouping is completed, adopts pipe welding machine to weld weld joint, because of the positioning and clamping function of tooling, effectively controls the welding deformation of pipe road.

[0041] Grouping method steps include:

[0042] Step one, place tank box liquid outlet pipe 1, liquid inlet pipe 2 and gas phase pipe 3 in pipe road grouping device simulation group tooling, respectively place inlet end of each pipe road in simulation group tooling tooling box 4, respectively fix outlet of flat head I and pipe road outlet end of each pipe road with first positioning mechanism 6 of simulation group tooling, complete pipe road positioning.

[0043] This step first needs to match relative position of tooling box 4 and first positioning mechanism 6 in simulation group tooling according to three-dimensional size of tank box and required position of tank box pipe road, special tooling can realize that pipe road needing to be grouped and welded meets the requirement of tank box, after meeting the corresponding requirement, weld tooling box 4 and first positioning mechanism 6 on tooling bottom plate 5; insert inlet end of liquid inlet pipe 2 and gas phase pipe 3 into positioning hole in upper part of tooling box 4, insert inlet end of liquid outlet pipe 1 into positioning hole in bottom surface of tooling box 4; respectively place outlet of flat head I and final outlet end of pipe road of liquid outlet pipe 1, gas phase pipe 3 and liquid inlet pipe 2 on first positioning mechanism 6 to complete pipe road positioning.

[0044] Step two, clamp and fix liquid outlet pipe 1, liquid inlet pipe 2 and gas phase pipe 3 on pipe road positioning mechanism, and respectively weld weld joint of each pipe road.

[0045] Step three, respectively take down liquid outlet pipe 1, liquid inlet pipe 2 and gas phase pipe 3 welded and grouped from positioning and welding group tooling, carry out weld joint radiographic testing and pipe road cleaning.

[0046] Step four, place liquid outlet pipe 1, liquid inlet pipe 2 and gas phase pipe 3 in lifting group tooling of pipe road grouping device, position and adjust the position of each pipe road through second positioning mechanism 10 and lifting mechanism 9 of lifting group tooling, when each pipe road is adapted to relative position of tank box, respectively weld and complete grouping with tank box.

[0047] The step is specifically implemented as follows: the tank box is placed in the tank body roller frame 8, the lifting mechanism 9 is opened, detection is performed by means of a laser level, the engraved line of the centering mark plate 11 on the lifting mechanism 9 is aligned with the horizontal center line of the tank box, so as to complete the positioning of the pipelines in the width direction of the tank body, and prevent the pipelines from being deviated in the left-right direction after being assembled with the tank box. The liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 are respectively placed in the second positioning mechanism 10 on the lifting mechanism 9 at the outlet of the flat head I and the outlet end of the pipelines, and the inlet ends of the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 are respectively welded with the tank box to complete the assembly.

[0048] Step five: after the welding assembly is completed, the lifting mechanism 9 is lowered, and the tank box is hoisted to the skirt assembly station. At the skirt assembly station, the flat head is assembled first, the flat head plays the functions of pipeline support and interlayer sealing, the flat head is assembled according to the process structure (the flat head is manufactured according to the shape of the process structure), and then a strength test is performed.

[0049] Step six: the flat head is assembled according to the process structure, and then the skirt and the tank body are assembled.

[0050] As shown in Figure 3 One Figure 6 In the tank box and pipeline assembly method of the pressure vessel of the application, all the tools are special tools, including a simulation assembly tool, which realizes the assembly and welding of the pipelines, controls the assembly size of the pipelines and welding deformation; and a lifting assembly tool, which realizes the centering, positioning and welding of the pipelines and the tank body.

[0051] The simulation assembly tool includes a tool box 4, a tool bottom plate 5 and a first positioning mechanism 6. The tool box 4 and the first positioning mechanism 6 are welded on the tool bottom plate 5. The upper part of the tool box 4 is provided with positioning holes for positioning the inlet ends of the liquid inlet pipeline 2 and the gas phase pipeline 3. The bottom surface of the tool box 4 is provided with a positioning hole for positioning the inlet end of the liquid outlet pipeline 1. The first positioning mechanism 6 includes a plurality of positioning columns, which can be used for positioning the outlet ends of the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 at the outlet of the flat head I and the final outlet end of the pipelines.

[0052] The lifting assembly tool includes an assembly tool base 7, a tank body roller frame 8, a lifting mechanism 9 and a second positioning mechanism 10. The tank body roller frame 8 and the lifting mechanism 9 are welded on the tool base 7, and the vertical center lines of the tank body roller frame 8 and the lifting mechanism 9 are located in the same plane. The second positioning mechanism 10 includes a plurality of positioning columns, which are used for positioning the outlet ends of the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3. The centering mark plate 11 is provided on the lifting mechanism 9, and the centering mark plate 11 and the transverse center line of the tank body roller frame 8 are located in the same plane. The upper end of the positioning column is a circular arc which is adapted to the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3. The bottom of the lifting mechanism 9 is provided with traveling wheels, so as to facilitate the adjustment of the centering of the pipelines and the tank body.

[0053] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for part or all of the technical features thereof; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A method of pressure vessel tank and shell and tube line-up, characterized by, It comprises the following steps: Step 1, the tank outlet pipeline (1), inlet pipeline (2) and gas phase pipeline (3) are placed in the simulated group matching device of the pipeline group matching device, the inlet end of each pipeline is respectively placed in the corresponding positioning hole of the tool body (4) of the simulated group matching device, and the outlet of the flat head I and the outlet end of the pipeline are respectively fixed with the first positioning mechanism (6) of the simulated group matching device to complete the pipeline positioning and assembly; the pipeline positioning of step 1 specifically comprises: Step 1.1, according to the three-dimensional size of the tank and the required position of the tank pipeline, the relative position of the tool body (4) and the first positioning mechanism (6) in the simulated group matching device is matched, and the tool body (4) and the first positioning mechanism (6) are welded on the tool bottom plate (5); Step 1.2, the inlet end of the inlet pipeline (2) and the gas phase pipeline (3) is inserted into the positioning hole on the upper part of the tool body (4), and the inlet end of the outlet pipeline (1) is inserted into the positioning hole on the bottom surface of the tool body (4); Step 1.3, the outlet pipeline (1), the gas phase pipeline (3) and the inlet pipeline (2) are respectively placed on the first positioning mechanism (6) at the outlet of the flat head I and the outlet end of the pipeline to complete the pipeline positioning; Step 2, the outlet pipeline (1), the inlet pipeline (2) and the gas phase pipeline (3) on the first positioning mechanism (6) are clamped and fixed, and the welds of the corresponding pipelines are respectively welded; Step 3, the welded outlet pipeline (1), inlet pipeline (2) and gas phase pipeline (3) are respectively taken out from the positioning and welding group matching device, and the welds are radiographed and the pipelines are cleaned; Step 4, the outlet pipeline (1), inlet pipeline (2) and gas phase pipeline (3) are placed in the lifting group matching device of the pipeline group matching device, the positions of the pipelines are positioned and adjusted through the second positioning mechanism (10) and the lifting mechanism (9) of the lifting group matching device, and when the relative positions of the pipelines and the tank are adapted, the pipelines are respectively welded with the tank to complete the group matching, which specifically comprises: Step 4.1, the tank is placed in the tank roller frame (8), the lifting mechanism (9) is started, and the laser level is used for detection, so that the graduation line of the centering mark plate (11) on the lifting mechanism (9) is aligned with the horizontal center line of the tank; Step 4.2, the outlet pipeline (1), inlet pipeline (2) and gas phase pipeline (3) are respectively placed in the second positioning mechanism (10) on the lifting mechanism (9) at the outlet of the flat head I and the outlet end of the pipeline; Step 4.2, the inlet end of the outlet pipeline (1), the inlet pipeline (2) and the gas phase pipeline (3) is respectively welded with the tank to complete the group matching.

2. The method of pairing a pressure vessel tank and a venting line of claim 1, wherein: The step 4 further comprises step 5, after the welding group matching is completed, the lifting mechanism (9) is lowered, the tank is transported to the strength test station, and the strength test of the tank and the pipeline is completed.

3. The pressure vessel tank and pipe group matching method according to claim 2, characterized in that: In step 1.3, the outlet pipeline (1), the gas phase pipeline (3) and the inlet pipeline (2) are respectively positioned through the pipeline adaptation groove on the first positioning mechanism (6) at the outlet of the flat head I and the outlet end of the pipeline.

4. A pressure vessel tank box and tube line group matching device, applied to the pressure vessel tank box and tube line group matching method of claims 1-3, characterized in that: The simulation assembly tooling for pipeline positioning and welding and the lifting assembly tooling for pipeline and tank assembly; The simulation assembly tooling comprises a tooling box (4), a tooling base plate (5) and a first positioning mechanism (6); the tooling box (4) and the first positioning mechanism (6) are welded on the tooling base plate (5), the upper part of the tooling box (4) is provided with positioning holes for positioning the inlet ends of the liquid inlet pipeline (2) and the gas phase pipeline (3), and the side of the tooling box (4) is provided with a positioning hole for positioning the inlet end of the liquid outlet pipeline (1); the first positioning mechanism (6) comprises a plurality of positioning columns, the upper ends of the positioning columns correspond to the preset positions of the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) on the pressure vessel tank, respectively, for positioning the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3); The lifting assembly tooling comprises an assembly tooling base (7), a tank roller frame (8), a lifting mechanism (9) and a second positioning mechanism (10); the tank roller frame (8) and the lifting mechanism (9) are welded on the tooling base (7), and the vertical center planes of the tank roller frame (8) and the lifting mechanism (9) are located on the same vertical plane; the second positioning mechanism (10) comprises a plurality of positioning columns, the upper ends of the positioning columns correspond to the preset positions of the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) on the pressure vessel tank, respectively, for positioning the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3).

5. The pressure vessel tank skid racking pair apparatus of claim 4, wherein: The centering mark plate (11) is arranged on the lifting mechanism (9) and corresponds to the vertical center plane of the tank roller frame (8).

6. The pressure vessel tank skid-rail road assembly of claim 5, wherein: The upper ends of the positioning columns are circular arc surfaces which are adapted to the shapes of the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3).

7. The pressure vessel tank and pipeline assembly device according to claim 6, wherein: The bottom of the lifting mechanism (9) is provided with traveling wheels, and the centering adjustment of the pipeline and the tank is realized through the traveling wheels.

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