Assembly method and assembly device for adding and discharging pipelines of tank container of pressure container

Abstract

The invention relates to a pressure container tank adding and discharging pipeline assembly method which comprises the following steps: step 1, placing a liquid outlet pipeline, a liquid inlet pipeline and a gas phase pipeline of a tank in a simulation assembly tool of a pipeline assembly device, and respectively fixing the outlet end of each pipeline with a first positioning mechanism of the simulation assembly tool; 2, a liquid outlet pipeline, a liquid inlet pipeline and a gas phase pipeline on the pipeline positioning mechanism are clamped and fixed, and welding seams of all the pipelines are welded; 3, taking down from the positioning welding assembly tool, and carrying out welding line radiographic inspection and pipeline cleaning; and 4, the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline are placed in a lifting assembly tool of the pipeline assembly device and are welded to the tank box, and assembly is completed. The interlayer pipeline and the external pipeline are assembled on the special tool, the overall size of the pipeline is effectively guaranteed, convenient conditions are provided for weld joint welding, the weld joint quality is guaranteed, and the manufacturing efficiency is improved.

Description

Technical Field

[0001] The invention relates to a pipeline pairing method, and in particular to a pressure vessel tank box discharge pipeline pairing method and a pairing device. Background Art

[0002] The existing pressure vessel tanks often have a double-layer structure. Figure 1 As shown, the space between the inner tank and the outer tank is called the interlayer, and the addition and discharge pipeline needs to pass through the interlayer to reach the outside of the flat head I of the outer tank after coming out of the inner tank. Figure 2 As shown, in the past, when manufacturing this type of tank container, the inner tank body was first manufactured and the sandwich pipeline was connected. When assembling the flat head I of the outer tank body, the sandwich pipeline was led out from the positioning hole of the flat head. After assembling the skirt II, the external pipeline in the skirt II was assembled. In order to ensure the strength and safety of the pipeline and comply with relevant standards, the weld between the sandwich pipeline and the external pipeline is a butt-jointed V-shaped groove weld. After welding, a radiographic flaw detection is required. Due to space limitations, structural interference and other reasons, the butt weld between the sandwich pipeline and the external pipeline is welded in a small space, and it takes a long time. At the same time, many difficulties must be overcome to complete the radiographic detection of the weld. In addition, the sandwich pipeline weld and the butt weld with the external pipeline cannot complete the strength test at one time, and an additional strength test is required, which causes great difficulties to the manufacturing work. Therefore, a new assembly method must be developed to ensure the smooth assembly of the pipeline and to ensure the strength and safety of the pipeline. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problems in the prior art that the sandwich pipeline and the external pipeline are difficult to weld, detect and clean after assembly, and to provide a pressure vessel tank box and drainage pipeline assembly method and assembly device, so as to realize the assembly of the sandwich pipeline and the external pipeline on a special tooling, effectively ensure the overall size of the pipeline, provide convenient conditions for weld welding and radiographic inspection, ensure the weld quality, and improve the manufacturing efficiency.

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

[0005] A method for assembling a pair of drainage pipes for a pressure vessel tank box is characterized in that it comprises the following steps:

[0006] Step 1: Place the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline of the tank container in the simulation assembly tool of the pipeline assembly device, and place the inlet end of each pipeline in the corresponding positioning hole of the tool box of the simulation assembly tool. The outlet of the flat head I and the outlet end of the pipeline are respectively fixed to the first positioning mechanism of the simulation assembly tool to complete the pipeline positioning and assembly;

[0007] Step 2, clamping and fixing the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline on the first positioning mechanism, and welding the welds of the corresponding pipelines respectively;

[0008] Step 3, the welded liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline are removed from the positioning welding group tooling respectively, and the weld seam radiographic inspection and pipeline cleaning are performed;

[0009] Step 4: Place the liquid outlet pipeline, liquid inlet pipeline and gas phase pipeline in the lifting assembly tooling of the pipeline assembly device, and adjust the position of each pipeline through the second positioning mechanism and the lifting mechanism of the lifting assembly tooling. When the relative positions of each pipeline and the tank box are adapted, they are welded to the tank box to complete the assembly.

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

[0011] Step 1.1, according to the three-dimensional size of the tank container and the required position of the tank container pipeline, match the relative positions of the tooling box and the first positioning mechanism in the simulation assembly tooling, and weld the tooling box and the first positioning mechanism to the tooling bottom plate;

[0012] Step 1.2, insert the inlet ends of the liquid inlet pipeline and the gas phase pipeline into the positioning holes on the upper part of the tooling box, and insert the inlet end of the liquid outlet pipeline into the positioning hole on the bottom surface of the tooling box;

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

[0014] Furthermore, the step 4 specifically includes:

[0015] Step 4.1, place the tank container in the tank body roller frame, start the lifting mechanism, and use a laser level to check that the engraved line on the centering mark plate on the lifting mechanism is aligned with the horizontal center line of the tank container;

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

[0017] Step 4.2, respectively weld the inlet ends of the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline to the tank container to complete the assembly.

[0018] Furthermore, step 5 is also included after step 4. After the welding assembly is completed, the lifting mechanism is lowered to transfer the tank container to the strength test station to complete the strength test of the tank container and the pipeline.

[0019] Furthermore, in the step 1.3, the liquid outlet pipeline, the gas phase pipeline and the liquid inlet pipeline are positioned at the outlet and pipeline outlet ends of the flat head I respectively through the pipeline adapter grooves on the first positioning mechanism.

[0020] A pressure vessel tank box and pipe assembly device, which is special in that it includes a simulation assembly tool for positioning and welding the pipes and a lifting assembly tool for assembling the pipes and the tank box;

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

[0022] The lifting assembly tooling includes an assembly tooling base, a tank roller frame, a lifting mechanism and a second positioning mechanism; the tank roller frame and the lifting mechanism are welded to the tooling base, and the center dividing planes of the tank roller frame and the lifting mechanism are located on the same vertical plane; the second positioning mechanism includes a plurality of positioning columns, the upper ends of which correspond to the preset positions of the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline on the pressure vessel tank box, respectively, and are used for positioning the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline, respectively.

[0023] Furthermore, a centering mark plate is arranged on the lifting mechanism, and the centering mark plate corresponds to the vertical center plane of the tank roller frame.

[0024] Furthermore, the upper end of the positioning column is an arc surface whose shape is respectively adapted to the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline.

[0025] Furthermore, a running wheel is provided at the bottom of the lifting mechanism, and the center alignment adjustment of the pipeline and the tank box is achieved through the running wheel.

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

[0027] 1. A pressure vessel tank box additional discharge pipeline assembly method and assembly device of the present invention, the interlayer pipeline and the external pipeline are assembled on a special tooling, which effectively ensures the overall size of the pipeline;

[0028] 2. A pressure vessel tank box and a discharge pipe assembly method and an assembly device of the present invention, wherein the interlayer pipe and the external pipe are assembled and welded as a whole, the welding space is large, the operation is easy, and the welding deformation of the pipe is effectively controlled;

[0029] 3. In the pressure vessel tank box and pipe assembly method of the present invention, all the butt welds of the overall pipeline are individually inspected by radiography, thus avoiding interference between the pipelines and difficulties in radiography inspection in narrow spaces;

[0030] 4. The pressure vessel tank box and drainage pipeline assembly method of the present invention realizes independent cleaning and maintenance of the entire pipeline, ensuring the manufacturing quality of the pipeline; on the premise of ensuring the quality of pipeline assembly welding, the quality of assembly welding of the flat head and the skirt is also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the end of a pressure vessel tank and a sandwich pipeline in the background technology of the present invention;

[0032] Figure 2 It is a side schematic diagram of a pressure vessel tank box and a sandwich pipeline in the background technology of the present invention;

[0033] Figure 3 It is a schematic diagram of a simulated assembly tooling of an embodiment of a pressure vessel tank box adding and draining pipeline assembly device of the present invention;

[0034] Figure 4 for Figure 3 A-direction view;

[0035] Figure 5 It is a schematic diagram of a lifting and assembling tooling of an embodiment of a pressure vessel tank box adding and discharging pipeline assembly device of the present invention;

[0036] Figure 6 for Figure 5 B-direction view of the middle lifting mechanism;

[0037] The following are the descriptions of the reference numerals:

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

[0039] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] The present invention provides a method for assembling a pressure vessel tank box and a discharge pipe. A special pipe simulation assembly tool is designed, an opening is made on the tool box body 4, and the tank box edge is welded. The outlet of each sandwich pipe at the flat head and the first positioning mechanism 6 of the inner and outer pipe outlets of each skirt seat are designed on the simulation assembly tool, so that the outlet is consistent with the tank box sandwich outlet, and the dimensions in the three directions of X, Y, and Z meet the requirements of the drawing. The liquid outlet pipe 1, the liquid inlet pipe 2, and the gas phase pipe 3 of the tank box are assembled on the simulation assembly tool. The design dimensions of the tool are basically consistent with the drawings, and a clamping device is designed to ensure that each pipe can meet the tank box requirements after being assembled on the tool. After the assembly of each pipe is completed, a pipe welding machine is used to weld the weld. Due to the positioning and clamping functions of the tool, the welding deformation of the pipe is effectively controlled.

[0041] The steps of the pairing method include:

[0042] Step 1: Place the tank liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 in the simulation assembly tooling of the pipeline assembly device, and place the inlet end of each pipeline in the tooling box 4 of the simulation assembly tooling. The outlet of each pipeline at the flat head 1 and the pipeline outlet end are respectively fixed to the first positioning mechanism 6 of the simulation assembly tooling to complete the pipeline positioning;

[0043] This step first requires matching the relative positions of the tooling box 4 and the first positioning mechanism 6 in the simulated assembly tooling according to the three-dimensional size of the tank container and the required position of the tank container pipeline. Through simulation, the special tooling can realize that the pipelines that need to be assembled and welded meet the requirements of the tank container. After meeting the corresponding requirements, the tooling box 4 and the first positioning mechanism 6 are welded to the tooling bottom plate 5; the inlet ends of the liquid inlet pipeline 2 and the gas phase pipeline 3 are inserted into the positioning holes on the upper part of the tooling box 4, and the inlet end of the liquid outlet pipeline 1 is inserted into the positioning hole on the bottom surface of the tooling box 4; the liquid outlet pipeline 1, the gas phase pipeline 3 and the liquid inlet pipeline 2 are respectively placed on the first positioning mechanism 6 at the outlet of the flat head I and the final outlet end of the pipeline to complete the pipeline positioning.

[0044] Step 2: clamp and fix the liquid outlet pipeline 1, liquid inlet pipeline 2 and gas phase pipeline 3 on the pipeline positioning mechanism, and weld the welds of each pipeline respectively.

[0045] Step three, the welded liquid outlet pipeline 1, liquid inlet pipeline 2 and gas phase pipeline 3 are removed from the positioning welding group tooling respectively, and the weld seam X-ray detection and pipeline cleaning are carried out.

[0046] Step 4: Place the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 in the lifting assembly tooling of the pipeline assembly device, and adjust the position of each pipeline by the second positioning mechanism 10 and the lifting mechanism 9 of the lifting assembly tooling. When the relative positions of each pipeline and the tank box are adapted, they are welded to the tank box to complete the assembly.

[0047] The specific steps are as follows: place the tank box in the tank body roller frame 8, start the lifting mechanism 9, and use a laser level to detect so that 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 to complete the positioning of the pipeline in the width direction of the tank body and prevent the left and right dimensional deviation of the pipeline and the tank box after assembly. Place the outlet and pipeline outlet ends of the flat head I of the liquid outlet pipeline 1, the liquid inlet pipeline 2, and the gas phase pipeline 3 in the second positioning mechanism 10 on the lifting mechanism 9, respectively, and weld the inlet ends of the liquid outlet pipeline 1, the liquid inlet pipeline 2, and the gas phase pipeline 3 to the tank box to complete the assembly.

[0048] Step 5. After the welding assembly is completed, the lifting mechanism 9 is lowered and the tank container is lifted to the skirt assembly station. At the skirt assembly station, the flat head is assembled first. The flat head plays the role of pipeline support and interlayer sealing. During assembly, the flat head is assembled according to the process structure (the flat head is made according to the shape of the process structure), and then a strength test is carried out.

[0049] Step 6: Assemble the flat head according to the process structure, and then assemble the skirt and the tank body.

[0050] like Figure 3 one Figure 6 As shown, in the pressure vessel tank box and drainage pipeline assembly method of the present invention, the tooling is all special tooling, including simulation assembly tooling to realize the assembly and welding of pipelines, and control the assembly size and welding deformation of the pipelines; the lifting assembly tooling realizes the centering, positioning and assembly welding of the pipeline and the tank body.

[0051] The simulation assembly tooling includes 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 to 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 bottom surface of the tooling box 4 is provided with positioning holes 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 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 pipeline respectively.

[0052] The lifting assembly tooling includes 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 to the tooling base 7, and the vertical center lines of the tank 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 respectively used for positioning the outlet ends of the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3. A centering mark plate 11 is provided on the lifting mechanism 9, and the centering mark plate 11 is located in the same plane as the horizontal center line of the tank roller frame 8. The upper end of the positioning column is an arc whose shape is adapted to the liquid outlet pipeline 1, the liquid inlet pipeline 2 and the gas phase pipeline 3 respectively. Travel wheels are provided at the bottom of the lifting mechanism 9 to facilitate the adjustment of the center alignment of the pipeline with the tank body.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A method for assembling a pressure vessel tank and a discharge pipe, characterized in that: The following steps are involved: Step 1: Place the tank liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) in the simulation assembly tool of the pipeline assembly device, and place the inlet end of each pipeline in the corresponding positioning hole of the tool box (4) of the simulation assembly tool. The outlet of the flat head I and the outlet end of the pipeline are respectively fixed to the first positioning mechanism (6) of the simulation assembly tool to complete the pipeline positioning and assembly; Step 2, clamping and fixing the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) on the first positioning mechanism (6), and welding the welds of the corresponding pipelines respectively; Step 3, the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) that have been welded are removed from the positioning welding group tooling respectively, and the weld seam radiographic inspection and pipeline cleaning are performed; Step 4, placing the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) in the lifting assembly tool of the pipeline assembly device, and adjusting the position of each pipeline by the second positioning mechanism (10) and the lifting mechanism (9) of the lifting assembly tool. When the relative positions of each pipeline and the tank box are adapted, they are respectively welded to the tank box to complete the assembly.

2. The method for assembling a pressure vessel tank and a discharge pipe according to claim 1, characterized in that: The pipeline positioning in step 1 specifically includes: Step 1.1, according to the three-dimensional size of the tank container and the required position of the tank container pipeline, match the relative positions of the tooling box (4) and the first positioning mechanism (6) in the simulation assembly tooling, and weld the tooling box (4) and the first positioning mechanism (6) to the tooling bottom plate (5); Step 1.2, insert the inlet ends of the liquid inlet pipeline (2) and the gas phase pipeline (3) into the positioning holes on the upper part of the tooling box (4), and insert the inlet end of the liquid outlet pipeline (1) into the positioning hole on the bottom surface of the tooling box (4); Step 1.3, the liquid outlet pipeline (1), the gas phase pipeline (3) and the liquid inlet pipeline (2) are respectively placed on the first positioning mechanism (6) at the outlet of the flat head I and the pipeline outlet end to complete the pipeline positioning.

3. The method for assembling a pressure vessel tank and a discharge pipe according to claim 2, characterized in that: The step 4 specifically includes: Step 4.1, place the tank container in the tank body roller frame (8), start the lifting mechanism (9), and use a laser level to check that the engraved line of the centering mark plate (11) on the lifting mechanism (9) is aligned with the horizontal center line of the tank container; Step 4.2, placing 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 pipeline outlet end respectively in the second positioning mechanism (10) on the lifting mechanism (9); Step 4.2, respectively weld the inlet ends of the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) to the tank container to complete the assembly.

4. The method for assembling a pressure vessel tank and a discharge pipe according to claim 3, characterized in that: The step 4 also includes a step 5, after the welding assembly is completed, the lifting mechanism (9) is lowered, and the tank container is transferred to the strength test station to complete the strength test of the tank container and the pipeline.

5. The method for assembling a pressure vessel tank and a discharge pipe according to claim 4, characterized in that: In the step 1.3, the liquid outlet pipeline (1), the gas phase pipeline (3) and the liquid inlet pipeline (2) are positioned at the outlet and pipeline outlet ends of the flat head I respectively through the pipeline adapter grooves on the first positioning mechanism (6).

6. A pressure vessel tank box pipe-adding and discharging pipe-adding and pairing device, applied to the pressure vessel tank box pipe-adding and discharging pipe-adding and pairing method according to claims 1-5, characterized in that: Including simulation assembly tooling for pipeline positioning and welding and lifting assembly tooling for assembling pipelines and tank containers; The simulation assembly tooling comprises a tooling box (4), a tooling bottom plate (5) and a first positioning mechanism (6); the tooling box (4) and the first positioning mechanism (6) are welded to the tooling bottom 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); the side of the tooling box (4) is provided with positioning holes 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 which 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 box, respectively, and are used for positioning the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3) respectively; The lifting assembly tool comprises an assembly tool 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 to the tool base (7), and the 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 which respectively 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 box, and are respectively used for positioning the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3).

7. The pressure vessel tank box pipe assembly device according to claim 6, characterized in that: A centering mark plate (11) is arranged on the lifting mechanism (9), and the centering mark plate (11) corresponds to the vertical center plane of the tank roller frame (8).

8. The pressure vessel tank box pipe assembly device according to claim 7, characterized in that: The upper end of the positioning column is an arc surface whose shape is respectively adapted to the liquid outlet pipeline (1), the liquid inlet pipeline (2) and the gas phase pipeline (3).

9. The pressure vessel tank box adding and discharging pipeline assembly device according to claim 8, characterized in that: The bottom of the lifting mechanism (9) is provided with running wheels, and the center alignment adjustment of the pipeline and the tank box is achieved through the running wheels.

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