Marine diesel engine SCR reactor assembly bracket tool and using method

Abstract

The invention provides a marine diesel engine SCR (Selective Catalytic Reduction) reactor assembly bracket tool and a using method thereof, a first carrier roller frame is mounted at the top of a first carrier roller base, a driving carrier roller is mounted on the first carrier roller frame, and the driving carrier roller is connected with a carrier roller driving device for driving the driving carrier roller to rotate; a second carrier roller base is arranged on the other side of the first carrier roller base in parallel, and a driven carrier roller device is installed on the top of the second carrier roller base in a supporting mode. The inlet side bracket is used for being matched with the driving carrier roller in a supporting manner; the inlet side bracket is mounted on an inlet flange of the SCR reactor assembly in a matched manner; the device further comprises an outlet side bracket used for being matched with the driven carrier roller device in a supporting mode, and the outlet side bracket is installed on an outlet flange of the SCR reactor assembly in a matched mode. According to the tool, an operator can conveniently climb over a product, the original circumferential welding seam is adjusted to be flat burning welding through rotation of the carrier rollers, meanwhile, a reliable working platform is provided for a welding machine and the operator, and the safety of the operator and equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of assembly welding of a marine diesel engine SCR reactor, and mainly relates to a marine diesel engine SCR reactor assembly bracket tooling and a use method thereof. Background Art

[0002] The marine diesel engine SCR exhaust after-treatment system is equipped with a catalyst block to convert NO X An exhaust treatment system that converts N2 and H20 through selective catalytic reduction reaction. With increasingly stringent environmental protection requirements, this system has a very broad market and application prospects. The SCR reactor in this system is a circular rotary structure, and the large-scale SCR reactor has the characteristics of huge size (such as the size of the SCR reactor of the 6G80ME-C10.5-110 series reaches 7000*4000*4000mm) and huge turning radius (such as the turning radius of the SCR reactor of the 6G80ME-C10.5-110 series reaches about 2400mm). The circular rotary structure allows it to be mounted on a roller frame for rotational assembly, welding and assembly, but due to its large number of models and different sizes, a universal bracket tooling is urgently needed during assembly, welding and assembly, and the tooling size is adjusted to adapt to the assembly of SCR reactors of various sizes. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a marine diesel engine SCR reactor assembly bracket tooling and a method of use. This tooling is convenient for the operator to climb onto the top of the product, and then adjust the original circumferential weld to a flat weld by rotating the roller. At the same time, a reliable working platform is provided for the welder and the operator to ensure the safety of the operator and the equipment. Furthermore, the design of this bracket tooling ensures the versatility of the tooling, and the height and extension length of the tooling springboard can be changed by limiting the height and length of the tooling to adapt to the welding of products of different sizes.

[0004] In order to achieve the above technical features, the object of the present invention is achieved as follows: a marine diesel engine SCR reactor assembly bracket tooling, including a first roller base, a first roller frame is installed on the top of the first roller base, an active roller is installed on the first roller frame, and the active roller is connected to a roller driving device for driving the active roller to rotate; A second roller base is arranged in parallel on the other side of the first roller base, and a driven roller device is installed on the top support of the second roller base; It also includes an inlet side bracket for supporting and cooperating with the active roller, and the inlet side bracket is mounted on the inlet flange of the SCR reactor assembly; It also includes an outlet side bracket for supporting and cooperating with the driven roller device, and the outlet side bracket is mounted on the outlet flange of the SCR reactor assembly.

[0005] The roller driving device comprises a motor, an output shaft of the motor is connected to an input shaft of a reducer, and the output shaft of the reducer is connected to a main shaft of one of the active rollers.

[0006] The driven roller device comprises a second roller frame, the second roller frame is hinged to the top of the second roller base, and the driven roller is installed on the second roller frame.

[0007] The inlet side bracket and the outlet side bracket adopt the same structural form, wherein the inlet side bracket includes a web for connecting to the inlet flange through a first bolt, a first gasket and a first nut, and a cylinder is provided at the edge of the web, and the outer surface of the cylinder is in contact with the inlet side bracket.

[0008] The two outer side walls of the cylinder and the web are symmetrically provided with ribs.

[0009] For SCR reactor assemblies of different sizes and models, the inlet side bracket also includes a transition plate, the inner ring of the transition plate is connected to the corresponding inlet flange through a bolt assembly, and the outer ring of the transition plate is connected to the inner ring of the web through a bolt assembly.

[0010] The outer side walls of the corresponding webs of the inlet side bracket and the outlet side bracket are detachably mounted with counterweight components.

[0011] The counterweight assembly includes a first counterweight block and a second counterweight block, and the second counterweight block is symmetrically arranged on both sides of the first counterweight block; the first counterweight block and the second counterweight block are respectively fixedly connected to the web by long bolt assemblies, and a positioning pin assembly is arranged between the first counterweight block and the second counterweight block and the web.

[0012] The long bolt assembly comprises a long bolt, a second gasket is arranged between the second bolt and the first counterweight block or the second counterweight block, the other end of the second bolt passes through the corresponding first counterweight block or the second counterweight block and the web, and a second nut is fixedly installed at the end; The positioning pin assembly includes a positioning shaft positioned on the corresponding first counterweight block and the second counterweight block, the tapered end of the positioning shaft matches the positioning hole on the web, and the end of the positioning shaft is positioned on the web through a third gasket and a screw.

[0013] A method for using a marine diesel engine SCR reactor assembly bracket tooling comprises the following steps: Step 1, selection of inlet side bracket and outlet side bracket size: According to the size of the SCR reactor assembly to be assembled and welded, select the inlet side bracket and the outlet side bracket of the corresponding size to ensure that the SCR reactor assembly with the inlet side bracket and the outlet side bracket installed can rotate smoothly on the active roller and the driven roller device; Step 2, fixed installation of the inlet side bracket and the outlet side bracket: After the sizes of the inlet side bracket and the outlet side bracket are selected, the inlet side bracket is installed on the inlet flange and the outlet side bracket is installed on the outlet flange; Step 3: Overall hoisting and placement of the SCR reactor assembly: After the SCR reactor assembly with the inlet side bracket and the outlet side bracket installed is hoisted as a whole, it is rolled and supported on the corresponding active roller and driven roller device, and it is ensured that the active roller can drive the SCR reactor assembly to rotate smoothly; Step 4, installation of the first counterweight and the second counterweight: Select a first counterweight block and a second counterweight block of corresponding size and model, and install the first counterweight block and the second counterweight block on the corresponding outer walls of the webs of the inlet side bracket and the outlet side bracket; Step 5, assembly welding of SCR reactor assembly: Start the roller drive device, drive the active roller through the roller drive device, drive the inlet side bracket to rotate through the active roller, and then drive the entire SCR reactor assembly to rotate through the inlet side bracket, and then adjust the girth weld above the SCR reactor assembly to burn flat welding, thereby improving the welding efficiency and welding quality of the product; After the assembly and welding of a type of SCR reactor assembly is completed, the corresponding inlet side bracket and outlet side bracket are disassembled, and a transition plate is selectively installed to adapt to different types of SCR reactor assemblies, and steps 2 to 5 are repeated.

[0014] The present invention has the following beneficial effects: 1. With the help of the SCR reactor assembly bracket tooling, the welding process and assembly assembly of the SCR reactor become more efficient. In particular, after the circumferential weld is adjusted to a flat weld through the roller frame, the difficulty of the welding operation is greatly reduced, and the forming quality of the weld is greatly improved, which not only reduces the production cost, but also improves the welding quality of the product.

[0015] 2. At the same time, this tooling can be used to adjust the size and is suitable for the welding of SCR reactors with different outer diameters. One tooling can meet the production needs of large quantities of products of different models, which has very obvious economic benefits.

[0016] 3. In addition, this tooling also provides a strong guarantee for the personal safety of welding operators and the safety of welding equipment. It can be said that this tooling has obvious benefit effects in many aspects.

[0017] 4. The counterweight mounting plate is welded with a 40mm carbon steel plate, and the flange bolt holes on the tooling must be processed to ensure the safety of personnel disassembly. This design has a simple structure and complete functions, and can make the SCR reactor rotate 360 ​​degrees. Not only is the welding efficiency higher, the weld forming quality is also better, and the assembly quality is effectively guaranteed.

[0018] 5. The main body of the bracket of the present invention is made of steel plates with different outer diameters, which are cut, processed and welded. This can ensure the strength of the tooling, save materials, and ensure the lightweight of the tooling, which is convenient for hoisting during later use. The tooling is welded with a connecting flange for bolting with the product flange. The difference is that a connecting positioning shaft for guiding the connection is also welded on the inner hole of the upper connecting flange. In actual use, brackets of different heights and quantities can be made according to the different sizes of the product, and they are bolted to each other to adjust the maximum use size of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention.

[0021] Figure 2 It is the overall structural front view of the present invention.

[0022] Figure 3 It is a side view of the overall structure of the present invention.

[0023] Figure 4 This is a structural diagram of the connection between the G80 reactor and the inlet side bracket of the present invention.

[0024] Figure 5 This is a structural diagram of the connection between the G70 / G60 reactor and the inlet side bracket of the present invention.

[0025] Figure 6 This is a structural diagram of the connection between the G60 / G50 reactor and the inlet side bracket of the present invention.

[0026] Figure 7 This is a structural diagram of the connection between the G50 reactor and the inlet side bracket of the present invention.

[0027] Figure 8 This is a front view of the connection between the first counterweight block and the second counterweight block and the web of the present invention.

[0028] Fig. 9 It is a side cross-sectional view of the connection between the first counterweight block and the second counterweight block and the web of the present invention.

[0029] Fig.10 For the present invention Figure 8 Medium AA view.

[0030] Fig.11 For the present invention Fig. 9 Partial view of center I.

[0031] Fig.12 It is the front view of the web of the present invention.

[0032] Fig.13 This is a front view of a transition plate according to the present invention.

[0033] In the figure: first roller base 1, motor 2, reducer 3, active roller 4, first roller frame 5, inlet side bracket 6, inlet flange 7, SCR reactor assembly 8, outlet flange 9, outlet side bracket 10, second roller frame 11, driven roller 12, second roller base 13, first counterweight 14, second counterweight 15, long bolt assembly 16, positioning pin assembly 17; Cylinder 601, rib plate 602, web plate 603, first bolt 604, first nut 605, first gasket 606, transition plate 607; A second nut 1601, a second washer 1602, and a second bolt 1603; Screw 1701 , third gasket 1702 , positioning shaft 1703 . DETAILED DESCRIPTION

[0034] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0035] Embodiment 1: See also Figure 1-13 A marine diesel engine SCR reactor assembly bracket tooling includes a first roller base 1, a first roller frame 5 is installed on the top of the first roller base 1, a driving roller 4 is installed on the first roller frame 5, and the driving roller 4 is connected to a roller driving device for driving the rotation thereof; a second roller base 13 is arranged in parallel on the other side of the first roller base 1, and a driven roller device is supported and installed on the top of the second roller base 13; it also includes an inlet side bracket 6 for supporting and cooperating with the driving roller 4, and the inlet side bracket 6 is mounted on the inlet flange 7 of the SCR reactor assembly 8; it also includes an outlet side bracket 10 for supporting and cooperating with the driven roller device, and the outlet side bracket 10 is mounted on the outlet flange 9 of the SCR reactor assembly 8. By adopting the above-mentioned assembly bracket tooling, it is convenient for the operator to climb onto the top of the product, and then adjust the original circumferential weld to burn flat welding through the rotation of the roller. At the same time, a reliable working platform is provided for the welder and the operator to ensure the safety of the operator and the equipment.

[0036] Furthermore, the roller drive device includes a motor 2, the output shaft of the motor 2 is connected to the input shaft of the reducer 3, and the output shaft of the reducer 3 is connected to the main shaft of one of the active rollers 4. The roller drive device can be used to provide rotational power. During operation, the motor 2 drives the reducer 3, the reducer 3 drives the active roller 4, and the active roller 4 drives the SCR reactor assembly 8 on the top of the support to rotate.

[0037] Furthermore, the driven roller device comprises a second roller frame 11, which is hinged to the top of a second roller base 13, and a driven roller 12 is mounted on the second roller frame 11. The driven roller device can realize reliable rotation support for the outlet side bracket 10.

[0038] Further, the inlet side bracket 6 and the outlet side bracket 10 adopt the same structural form, wherein the inlet side bracket 6 includes a web 603 for being connected with the inlet flange 7 through a first bolt 604, a first gasket 606 and a first nut 605, and a cylinder 601 is provided at the edge of the web 603, and the outer surface of the cylinder 601 forms a contact fit with the inlet side bracket 6. The above-mentioned inlet side bracket 6 and outlet side bracket 10 ensure the rotation support of the entire SCR reactor assembly 8.

[0039] Furthermore, ribs 602 are symmetrically arranged on the two outer side walls of the cylinder 601 and the web 603. The ribs 602 enhance the strength of the supporting structure between the cylinder 601 and the web 603.

[0040] Furthermore, for SCR reactor assemblies 8 of different sizes, the inlet side bracket 6 also includes a transition plate 607, the inner ring of the transition plate 607 is connected with the corresponding inlet flange 7 through a bolt assembly, and the outer ring of the transition plate 607 is connected with the inner ring of the web 603 through a bolt assembly. This bracket tooling design scheme ensures the versatility of the tooling, and the height and extension length of the tooling springboard can be changed by limiting the height and length of the tooling to adapt to the welding of products of different sizes. When it is necessary to replace SCR reactor assemblies 8 of different models, it is only necessary to select the transition plate 607 and web 603 of the corresponding size to adapt to different SCR reactor assemblies 8.

[0041] Furthermore, a counterweight assembly is detachably mounted on the outer side wall of the corresponding web 603 of the inlet side bracket 6 and the outlet side bracket 10. Through the above counterweight assembly, the flange bolt holes designed for the tooling must be processed to ensure the detachability for personnel safety. This design has a simple structure but complete functions, and can make the SCR reactor rotate 360 ​​degrees, which not only has higher welding efficiency, but also better weld forming quality, while effectively ensuring the assembly quality.

[0042] Furthermore, the counterweight assembly includes a first counterweight block 14 and a second counterweight block 15, and the second counterweight block 15 is symmetrically arranged on both sides of the first counterweight block 14; the first counterweight block 14 and the second counterweight block 15 are respectively fixedly connected to the web 603 by long bolt assemblies 16, and a positioning pin assembly 17 is arranged between the first counterweight block 14 and the second counterweight block 15 and the web 603.

[0043] Further, the long bolt assembly 16 includes a long bolt 1603, a second gasket 1602 is provided between the second bolt 1603 and the first counterweight 14 or the second counterweight 15, the other end of the second bolt 1603 passes through the corresponding first counterweight 14 or the second counterweight 15 and the web 603, and a second nut 1601 is fixedly installed at the end. The long bolt assembly 16 can achieve reliable fixation of the first counterweight 14 or the second counterweight 15.

[0044] Further, the positioning pin assembly 17 includes a positioning shaft 1703 positioned on the corresponding first counterweight 14 and the second counterweight 15, the tapered end of the positioning shaft 1703 matches the positioning hole on the web 603, and the end of the positioning shaft 1703 is positioned on the web 603 through the third gasket 1702 and the screw 1701. The above-mentioned positioning pin assembly 17 can realize the reliable positioning of the first counterweight 14 and the second counterweight 15.

[0045] Embodiment 2: A method for using a marine diesel engine SCR reactor assembly bracket tooling comprises the following steps: Step 1, selection of the size of the inlet side bracket 6 and the outlet side bracket 10: According to the size of the SCR reactor assembly 8 to be assembled and welded, the inlet side bracket 6 and the outlet side bracket 10 of corresponding size are selected to ensure that the SCR reactor assembly 8 with the inlet side bracket 6 and the outlet side bracket 10 installed can rotate smoothly on the active roller 4 and the driven roller device; Step 2, fixed installation of the inlet side bracket 6 and the outlet side bracket 10: After the sizes of the inlet side bracket 6 and the outlet side bracket 10 are selected, the inlet side bracket 6 is correspondingly installed on the inlet flange 7, and the outlet side bracket 10 is correspondingly installed on the outlet flange 9; Step 3: hoisting and placing the SCR reactor assembly 8 as a whole: After the SCR reactor assembly 8 with the inlet side bracket 6 and the outlet side bracket 10 installed is hoisted as a whole, it is rolled and supported on the corresponding active roller 4 and driven roller device, and it is ensured that the active roller 4 can drive the SCR reactor assembly 8 to rotate smoothly; Step 4, installation of the first counterweight 14 and the second counterweight 15: Select the first counterweight block 14 and the second counterweight block 15 of corresponding size and type, and install the first counterweight block 14 and the second counterweight block 15 on the outer walls of the corresponding webs 603 of the inlet side bracket 6 and the outlet side bracket 10; Step 5, assembly welding of the SCR reactor assembly 8: The roller driving device is started, and the active roller 4 is driven by the roller driving device, and the inlet side bracket 6 is driven to rotate by the active roller 4, and then the entire SCR reactor assembly 8 is driven to rotate by the inlet side bracket 6, and then the girth weld above the SCR reactor assembly 8 is adjusted to be burnt flat welding, thereby improving the welding efficiency and welding quality of the product; After the assembly and welding of a type of SCR reactor assembly 8 is completed, the corresponding inlet side bracket 6 and outlet side bracket 10 are disassembled, and the transition plate 607 is selectively installed to adapt to different types of SCR reactor assemblies 8, and steps 2 to 5 are repeated.

Claims

1. A marine diesel engine SCR reactor assembly bracket tooling, characterized in that: It comprises a first roller base (1), a first roller frame (5) is mounted on the top of the first roller base (1), an active roller (4) is mounted on the first roller frame (5), and the active roller (4) is connected to a roller driving device for driving the active roller to rotate; A second roller base (13) is arranged in parallel on the other side of the first roller base (1), and a driven roller device is mounted on the top support of the second roller base (13); It also includes an inlet side bracket (6) for supporting and cooperating with the active roller (4), and the inlet side bracket (6) is mounted on the inlet flange (7) of the SCR reactor assembly (8); It also includes an outlet side bracket (10) for supporting and cooperating with the driven roller device, and the outlet side bracket (10) is mounted on the outlet flange (9) of the SCR reactor assembly (8).

2. According to claim 1, a marine diesel engine SCR reactor assembly bracket tooling, characterized in that: The roller driving device comprises a motor (2), the output shaft of the motor (2) is connected to the input shaft of a reducer (3), and the output shaft of the reducer (3) is connected to the main shaft of one of the active rollers (4).

3. According to claim 2, a marine diesel engine SCR reactor assembly bracket tooling, characterized in that: The driven roller device comprises a second roller frame (11), the second roller frame (11) is hinged to the top of a second roller base (13), and a driven roller (12) is mounted on the second roller frame (11).

4. According to claim 1, a marine diesel engine SCR reactor assembly bracket tooling is characterized by: The inlet side bracket (6) and the outlet side bracket (10) adopt the same structural form, wherein the inlet side bracket (6) comprises a web (603) for being connected to the inlet flange (7) via a first bolt (604), a first gasket (606) and a first nut (605), and a cylinder (601) is provided on the edge of the web (603), and the outer surface of the cylinder (601) is in contact with the inlet side bracket (6).

5. According to claim 4, a marine diesel engine SCR reactor assembly bracket tooling is characterized by: Rib plates (602) are symmetrically arranged on the two outer side walls of the cylinder (601) and the web (603).

6. The marine diesel engine SCR reactor assembly bracket tooling according to claim 4, characterized in that: For SCR reactor assemblies (8) of different sizes and models, the inlet side bracket (6) further includes a transition plate (607), the inner ring of the transition plate (607) is connected to the corresponding inlet flange (7) through a bolt assembly, and the outer ring of the transition plate (607) is connected to the inner ring of the web (603) through a bolt assembly.

7. The marine diesel engine SCR reactor assembly bracket tooling according to claim 4, characterized in that: A counterweight assembly is detachably mounted on the outer side walls of the corresponding webs (603) of the inlet side bracket (6) and the outlet side bracket (10).

8. The marine diesel engine SCR reactor assembly bracket tooling according to claim 7, characterized in that: The counterweight assembly comprises a first counterweight block (14) and a second counterweight block (15), wherein the second counterweight block (15) is symmetrically arranged on both sides of the first counterweight block (14); the first counterweight block (14) and the second counterweight block (15) are fixedly connected to the web (603) via long bolt assemblies (16), respectively, and a positioning pin assembly (17) is arranged between the first counterweight block (14) and the second counterweight block (15) and the web (603).

9. The marine diesel engine SCR reactor assembly bracket tooling according to claim 8, characterized in that: The long bolt assembly (16) comprises a long bolt (1603), a second gasket (1602) is arranged between the second bolt (1603) and the first counterweight block (14) or the second counterweight block (15), the other end of the second bolt (1603) passes through the corresponding first counterweight block (14) or the second counterweight block (15) and the web (603), and a second nut (1601) is fixedly installed at the end; The positioning pin assembly (17) comprises a positioning shaft (1703) positioned on the corresponding first counterweight block (14) and the second counterweight block (15); the tapered end of the positioning shaft (1703) matches with the positioning hole on the web (603); the end of the positioning shaft (1703) is positioned on the web (603) via a third gasket (1702) and a screw (1701).

10. The method for using the marine diesel engine SCR reactor assembly bracket tooling according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, selection of the size of the inlet side bracket (6) and the outlet side bracket (10): According to the size of the SCR reactor assembly (8) to be assembled and welded, an inlet side bracket (6) and an outlet side bracket (10) of corresponding size are selected to ensure that the SCR reactor assembly (8) with the inlet side bracket (6) and the outlet side bracket (10) installed can rotate smoothly on the active roller (4) and the driven roller device; Step 2: Fixing and installing the inlet side bracket (6) and the outlet side bracket (10): After the sizes of the inlet side bracket (6) and the outlet side bracket (10) are selected, the inlet side bracket (6) is installed on the inlet flange (7) and the outlet side bracket (10) is installed on the outlet flange (9); Step 3: hoisting and placing the SCR reactor assembly (8): After the SCR reactor assembly (8) with the inlet side bracket (6) and the outlet side bracket (10) installed is hoisted as a whole, it is rolled and supported on the corresponding active roller (4) and driven roller device, and it is ensured that the active roller (4) can drive the SCR reactor assembly (8) to rotate smoothly; Step 4, installation of the first counterweight (14) and the second counterweight (15): Selecting a first counterweight block (14) and a second counterweight block (15) of corresponding size and type, and installing the first counterweight block (14) and the second counterweight block (15) on the outer walls of the corresponding webs (603) of the inlet side bracket (6) and the outlet side bracket (10); Step 5, assembly welding of the SCR reactor assembly (8): Starting the roller drive device, driving the active roller (4) through the roller drive device, driving the inlet side bracket (6) to rotate through the active roller (4), and then driving the entire SCR reactor assembly (8) to rotate through the inlet side bracket (6), thereby adjusting the girth weld above the SCR reactor assembly (8) to a flat weld, thereby improving the welding efficiency and welding quality of the product; When the assembly and welding of a type of SCR reactor assembly (8) is completed, the corresponding inlet side bracket (6) and outlet side bracket (10) are disassembled, and a transition plate (607) is selectively installed to adapt to different types of SCR reactor assemblies (8), and steps 2 to 5 are repeated.

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