A non-self-contained chimney desulfurization module and a method of constructing the same

Abstract

The application discloses a non-independent chimney desulfurization module, which comprises a back wall plate, a temporary support frame, a first inclined ladder and a second inclined ladder. The temporary support frame is installed on the front part of the back wall plate, and a piping system is installed in the temporary support frame. The non-independent chimney desulfurization module is optimized in design. Vertical pipe supports are additionally arranged on the left, right and bow surfaces of the module, which are used as the main load-bearing of each layer platform during the assembly of the module at the wharf and are used to hold the internal pipes and platforms during the lifting of the module. In addition, horizontal pipes are additionally arranged below each internal platform to support the installation of the platforms. Inclined connecting pipes are arranged on each surface in an up-down mode, so that the rigidity and strength of the module are increased. After the structure is improved, only a small amount of pipes need to be additionally arranged, and the pipes and the iron platform in the chimney can be assembled in advance at the wharf. The chimney can be modularly constructed, the installation precision of the pipes is easier to guarantee, the chimney can be hoisted onto the ship at one time after the ship arrives, and the construction time on the ship is greatly shortened.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding and marine engineering technology, specifically to a non-independent chimney desulfurization module and its construction method. Background Technology

[0002] The ship's smokestack is the ship's exhaust system, which is part of the ship's power system. When the ship's diesel engine or gas turbine is working, it needs to draw in fresh air to ensure efficient combustion of fuel. After combustion, a large amount of exhaust gas is produced, which needs to be discharged by the exhaust system, i.e., the smokestack. Sulfur oxides (SOX) in ship exhaust gas are pollutants formed after the combustion of sulfur in fuel oil, which are very harmful to the air. With the implementation of the International Maritime Organization's "sulfur cap", ship exhaust gas desulfurization systems have been widely used.

[0003] Ships that require desulfurization retrofitting are generally in operation, and the retrofitting cycle is often a key indicator for ship owners. Modular construction is the most direct and effective way to shorten the retrofitting cycle. However, for ships with non-independent chimneys, due to the special nature of their structure, it is difficult to construct them modularly in the conventional way.

[0004] For ships with non-independent chimneys, the port and starboard sides and the forward wall are integrated with the living quarters, making it almost impossible to replace them. Even if they were to be replaced, installing modules on the ship would be problematic because the three sides are locked. Therefore, only the aft and top structures of such ships can be replaced. Without technical modifications, it is impossible to make modules. In view of this, it is necessary to invent a non-independent chimney desulfurization module and its construction method to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a non-independent chimney desulfurization module and its construction method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A non-independent chimney desulfurization module includes a rear wall panel, a temporary support frame, a first inclined ladder, and a second inclined ladder. The temporary support frame is installed at the front of the rear wall panel, and a piping system is installed inside the temporary support frame. A first iron outfitting platform, a second iron outfitting platform, a third iron outfitting platform, and a fourth iron outfitting platform are installed sequentially along the piping system from bottom to top on the temporary support frame. A first inclined ladder is installed between the first iron outfitting platform and the second iron outfitting platform, and a second inclined ladder is installed between the second iron outfitting platform and the third iron outfitting platform. A top cover is installed on the top of the temporary support frame.

[0008] As a further aspect of the present invention: the temporary support frame includes a vertical support pipe, a horizontal support pipe, a longitudinal support pipe, an oblique support pipe and a top cover support pipe. A horizontal support pipe is installed between two adjacent vertical support pipes on the left and right, a longitudinal support pipe is installed between two adjacent vertical support pipes in front and behind, an oblique support pipe is installed between two adjacent longitudinal support pipes in the top and bottom, and four top cover support pipes are installed on the uppermost horizontal support pipe.

[0009] As a further embodiment of the present invention: a total of five vertical support pipes are provided, three of which are arranged side by side at the front end of the temporary support frame, and the remaining two vertical support pipes are arranged on both sides of the other three vertical support pipes.

[0010] As a further aspect of the present invention: a straight ladder is installed between the second iron outfitting platform and the third iron outfitting platform.

[0011] As a further embodiment of the present invention: an inclined ladder is provided between the third iron outfitting platform and the fourth iron outfitting platform, and guardrails are installed on the first iron outfitting platform, the second iron outfitting platform, the third iron outfitting platform and the fourth iron outfitting platform.

[0012] As a further aspect of the present invention: the specifications of the vertical support tube adopt... The vertical support pipe is a circular tube, and the distance between the vertical support pipe and the chimney wall panel is 300mm.

[0013] A method for constructing a non-independent chimney desulfurization module, comprising the following steps;

[0014] Step 1: First, according to the designed support diagram, assemble the vertical support pipes, horizontal support pipes, longitudinal support pipes and diagonal support pipes to form a temporary support frame.

[0015] Steps: Then weld the rear wall panel to the temporary support frame as one piece, and install the internal piping system layer by layer.

[0016] Steps: Finally, install the top cover on the piping system and temporary support frame. After completion, install the entire module on the gondola and remove the temporary support frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention, through design optimization, adds vertical pipe supports on the left, right, and bow sides. These supports serve as the main load-bearing structures for each platform during dock assembly and to support the internal pipes and platforms during ship hoisting. Additionally, horizontal pipes are added below each internal platform to support platform installation. Diagonal connecting pipes are installed on each side to increase the rigidity and strength of the module. With this improved structural form, only a small number of pipes need to be added. The pipes inside the chimney and the iron outfitting platform can be pre-assembled at the dock, enabling modular construction. The installation accuracy of the pipes is also easier to ensure. Once the ship arrives, they can be hoisted onto the ship in one go, significantly shortening the construction time on board. The temporarily added pipe supports can be easily removed by cutting them smaller without altering the original design of the ship. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall partial structure of the present invention.

[0021] 1. Rear wall panel; 2. Temporary support frame; 201. Vertical support pipe; 202. Horizontal support pipe; 203. Longitudinal support pipe; 204. Diagonal support pipe; 205. Top cover support pipe; 3. First iron outfitting platform; 4. Second iron outfitting platform; 5. Third iron outfitting platform; 6. Fourth iron outfitting platform; 7. First inclined ladder; 8. Second inclined ladder; 9. Straight ladder; 10. Guardrail; 11. Piping system; 12. Top cover. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-2 In this embodiment of the invention, a non-independent chimney desulfurization module includes a rear wall panel 1, a temporary support frame 2, a first inclined ladder 7, and a second inclined ladder 8. The temporary support frame 2 is installed at the front of the rear wall panel 1. A pipe system 11 is installed inside the temporary support frame 2. A first iron outfitting platform 3, a second iron outfitting platform 4, a third iron outfitting platform 5, and a fourth iron outfitting platform 6 are installed sequentially along the pipe system 11 from bottom to top on the temporary support frame 2. The first inclined ladder 7 is installed between the first iron outfitting platform 3 and the second iron outfitting platform 4. The second inclined ladder 8 is installed between the second iron outfitting platform 4 and the third iron outfitting platform 5. A top cover 12 is installed on the top of the temporary support frame 2.

[0024] The temporary support frame 2 includes vertical support pipes 201, horizontal support pipes 202, longitudinal support pipes 203, diagonal support pipes 204, and top cover support pipes 205. Horizontal support pipes 202 are installed between two adjacent left and right vertical support pipes 201, longitudinal support pipes 203 are installed between two adjacent front and rear vertical support pipes 201, and diagonal support pipes 204 are installed between two adjacent vertical support pipes 203. Four top cover support pipes 205 are installed on the uppermost horizontal support pipe 202. The diagonal support pipes 204 can increase the rigidity and strength of the module and improve its stability.

[0025] There are five vertical support pipes 201 in total. Three of the five vertical support pipes 201 are arranged side by side at the front end of the temporary support frame 2, and the remaining two vertical support pipes 201 are arranged on both sides of the other three vertical support pipes 201.

[0026] A straight ladder 9 is installed between the second iron outfitting platform 4 and the third iron outfitting platform 5. The straight ladder 9 and the inclined ladder work together to meet the different climbing needs of construction and maintenance personnel.

[0027] An inclined ladder is provided between the third iron outfitting platform 5 and the fourth iron outfitting platform 6. Guardrails 10 are installed on the first iron outfitting platform 3, the second iron outfitting platform 4, the third iron outfitting platform 5 and the fourth iron outfitting platform 6. The guardrails 10 are designed to provide full protection for workers who are carrying out maintenance or repair on the platform.

[0028] The specifications of vertical support pipe 201 are as follows: The distance between the round pipe, the vertical support pipe 201 and the chimney wall panel is 300mm. This is to provide reasonable space for installation on the ship and to ensure that it can be installed normally when it is loaded onto the ship.

[0029] A method for constructing a non-independent chimney desulfurization module involves first assembling a temporary support frame 2 by pre-assembling vertical support pipes 201, horizontal support pipes 202, longitudinal support pipes 203, and diagonal support pipes 204 according to the designed support diagram. Then, the rear wall panel 1 is welded to the temporary support frame 2 as a whole, and the internal piping system 11 is installed layer by layer. Finally, the top cover 12 is installed on the piping system 11 and the temporary support frame 2. After completion, the entire module is hoisted and the temporary support frame 2 is removed.

[0030] This invention reinforces the other three sides of the existing structure, enclosing the installation space for the piping system. The internal platform is assembled into modules. After improving the structural form, only a small number of pipes need to be added. The pipes and iron outfitting platform inside the chimney can be pre-assembled at the dock, enabling modular construction and making it easier to ensure the installation accuracy of the pipes.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-independent chimney desulfurization module, comprising a rear wall panel (1), a temporary support frame (2), a first inclined ladder (7), and a second inclined ladder (8), characterized in that: A temporary support frame (2) is installed at the front of the rear wall panel (1). A pipe system (11) is installed inside the temporary support frame (2). A first iron outfitting platform (3), a second iron outfitting platform (4), a third iron outfitting platform (5), and a fourth iron outfitting platform (6) are installed sequentially along the pipe system (11) from bottom to top on the temporary support frame (2). A first inclined ladder (7) is installed between the first iron outfitting platform (3) and the second iron outfitting platform (4). A second inclined ladder (8) is installed between the second iron outfitting platform (4) and the third iron outfitting platform (5). A top cover (12) is installed on the top of the temporary support frame (2). The temporary support frame (2) includes a vertical support pipe (201), a horizontal support pipe (202), a longitudinal support pipe (203), and an inclined... A transverse support pipe (202) is installed between two adjacent vertical support pipes (201) on the left and right sides, a longitudinal support pipe (203) is installed between two adjacent vertical support pipes (201) in front and behind, and a diagonal support pipe (204) is installed between two adjacent longitudinal support pipes (203) in the upper and lower sides. Four top cover support pipes (205) are installed on the uppermost transverse support pipe (202). There are a total of five vertical support pipes (201). Three of the five vertical support pipes (201) are arranged side by side at the front end of the temporary support frame (2), and the remaining two vertical support pipes (201) are arranged on both sides of the other three vertical support pipes (201).

2. The non-independent chimney desulfurization module according to claim 1, characterized in that: A straight ladder (9) is installed between the second iron outfitting platform (4) and the third iron outfitting platform (5).

3. The non-independent chimney desulfurization module according to claim 1, characterized in that: An inclined ladder is provided between the third iron outfitting platform (5) and the fourth iron outfitting platform (6), and guardrails (10) are installed on the first iron outfitting platform (3), the second iron outfitting platform (4), the third iron outfitting platform (5) and the fourth iron outfitting platform (6).

4. A non-independent chimney desulfurization module according to claim 1, characterized in that: The vertical support pipe (201) is a round pipe with a diameter of ø168*10, and the distance between the vertical support pipe (201) and the chimney wall panel is 300mm.

5. The method for constructing a non-independent chimney desulfurization module according to claim 1, characterized in that: The steps are as follows; Step 1: First, according to the design support diagram, assemble the vertical support pipe (201), horizontal support pipe (202), longitudinal support pipe (203) and diagonal support pipe (204) to form a temporary support frame (2); Step 2: Then weld the rear wall panel (1) and the temporary support frame (2) together, and install the internal piping system (11) layer by layer. Step 3: Finally, install the top cover (12) on the piping system (11) and the temporary support frame (2). After completion, install the entire module gondola and remove the temporary support frame (2).

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