Fire work correction method for segmented wall plate of ship chimney

Abstract

The invention discloses a hot work correction method for a ship chimney segmented wallboard, which specifically comprises the following steps of: S1, determining a deformation form of a connecting plate with a large opening of the chimney segmented wallboard, and mounting B-type weights on the connecting plate on two sides of the connecting plate to be corrected; s2, a correcting rod is arranged on the end face of the connecting plate to be corrected, and the correcting rod is connected with the B-type code through a chain block; and S3, the chain block is tensioned, the connecting plate to be corrected is subjected to hot work correction and water cooling to complete correction of the connecting plate, then levelness measurement is conducted on the corrected connecting plate, and when the levelness does not meet the requirement, the correction step is repeated till the levelness of the connecting plate meets the requirement. By means of the lever principle, the problems that no powerful structure exists in a ship chimney segmented wall plate, and deformation of a connecting plate between wall plate openings cannot be treated through a portable oil pump are solved, deformation correction can be completed without relying on rare driving resources any more, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a pyrotechnic correction method for segmented wall panels of a ship chimney. Background Art

[0002] The hull structure includes the bow and stern area, the cargo hold area and the superstructure area. Compared with other hull areas, the thickness of the steel plate used in the superstructure area is the smallest in the whole ship, and the auxiliary reinforcement of the hull is relatively weak. The chimney segment is mainly used for the layout of the ship's smoke duct. There are multiple large openings on the structural wall plate, and the width of the connecting plate between the openings is narrow. The connecting plate here is easy to deform during the segment production process, resulting in the subsequent installation of blinds and other outfitting parts. The flatness does not meet the installation requirements. Since there is no strong structure on the inside of the opening here, the traditional method of using an oil pump to lift out the pyrotechnics from the inside of the segment cannot be used. In this case, a large gantry crane is usually used to lift the deformed area from the outside of the segment to solve the problem of large opening deformation of the wall plate. This method has many disadvantages. ① There are great safety hazards in using a large gantry crane to lift. If the lifting force is not well controlled, it is easy to cause the segment to deform or even tip over. ② Large gantry cranes are scarce resources, and the conventional lifting time itself is tight. If they are corrected, the dock assembly operation time will be insufficient and the production cycle will be tight. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a pyrotechnic correction method for the segmented wall panels of ship chimneys. The present invention overcomes the problem that there is no strong structure inside the segmented wall panels of ship chimneys and a portable oil pump cannot be used to handle the deformation of the connecting plates between the wall panel openings by using the principle of a lever. Compared with the traditional method of relying on large-scale crane lifting, the safety of the present method is greatly improved, and it no longer relies on scarce crane resources to complete such deformation correction problems, thereby improving production efficiency.

[0004] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0005] A method for pyrotechnic correction of a segmented wall plate of a ship chimney, the method specifically comprising the following steps:

[0006] S1, determine the deformation form of the connecting plate of the large opening of the chimney segment wall plate, and install B-type code on the connecting plates on both sides of the connecting plate to be corrected;

[0007] S2, a correction rod is arranged on the end surface of the connecting plate to be corrected, and the correction rod is connected to the B-type code through a hand chain hoist;

[0008] S3, the connection plate is corrected by tightening the hand chain hoist and performing pyrotechnic correction and water cooling on the connection plate to be corrected, and then the horizontality of the corrected connection plate is measured. If it does not meet the requirements, the correction steps are repeated until the horizontality of the connection plate meets the requirements.

[0009] Furthermore, the deformation forms of the connecting plate of the large opening of the chimney segment wall panel include that the middle of the connecting plate is horizontal and the plate surfaces on both sides of the connecting plate are concave inwards or the plate surfaces are warped outwards.

[0010] Furthermore, the B-type code is installed specifically as follows: when the plate surface on one side of the connecting plate to be corrected is recessed inwardly, a B-type code is set in the middle of the end surface of the connecting plate on the same side opposite to the recessed plate surface; when the plate surface on one side of the connecting plate to be corrected is warped outwardly, a B-type code is set in the middle of the end surface of the connecting plate on the opposite side of the warped plate surface.

[0011] Furthermore, the correction rod includes a clamping part and a connecting part, the connecting part is provided at the upper end of the clamping part, the clamping part as a whole is a U-shaped groove, the side of the clamping part is fixedly connected to the connecting part, the notch of the clamping part is horizontally arranged, a connecting hole is provided at the upper end of the connecting part, and the connecting plate as a whole is a cross-shaped plate.

[0012] Furthermore, the center line of the connecting hole is arranged perpendicular to the direction of the clamping portion groove.

[0013] Furthermore, the correction rod is specifically installed as follows: the correction rod is installed on the connecting plate to be corrected, the clamping part on the correction rod is clamped on the plate surface to be corrected through the clamping groove, the correction rod and the B-type codes on the opposite sides of the connecting plate are arranged correspondingly, and the connecting line between the correction rod and the corresponding B-type code is perpendicular to the connecting plate.

[0014] Furthermore, while the hand chain hoist is tightened, the connecting plate to be corrected is simultaneously corrected by pyrotechnics and water-cooled, and the correction sequence is from the middle of the connecting plate to both ends of the connecting plate.

[0015] Based on the above technical solution, the pyrotechnic correction method for the segmented wall plate of a ship chimney in the present invention has achieved the following technical advantages through practical application:

[0016] 1. The pyrotechnic correction method for the segmented wall panels of ship chimneys of the present invention overcomes the problem that there is no strong structure inside the segmented wall panels of ship chimneys and a portable oil pump cannot be used to handle the deformation of the connecting plates between the wall panel openings. Compared with the traditional method of relying on large-scale crane lifting, the safety of the method is greatly improved, and it is no longer dependent on scarce crane resources to complete such deformation correction problems, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The present invention is a structural diagram of a correction rod used in a pyrotechnic correction method for a segmented wall plate of a ship chimney.

[0018] Figure 2 The present invention is a stereoscopic diagram of the use and installation of a correction rod in a pyrotechnic correction method for a segmented wall plate of a ship chimney.

[0019] Figure 3 The present invention is a front view of a correction rod used in a pyrotechnic correction method for a segmented wall plate of a ship chimney. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0021] like Figure 1-3 The present invention relates to a method for pyrotechnic correction of a segmented wall plate of a ship chimney, which method specifically comprises the following steps:

[0022] S1, determine the deformation form of the connecting plate 21 with a large opening of the wall plate of the chimney segment 2, and install the B-type code 3 on the connecting plates 21 on both sides of the connecting plate 21 to be corrected;

[0023] S2, a correction rod 1 is arranged on the end surface of the connecting plate 21 to be corrected, and the correction rod 1 is connected to the B-type code 3 through a hand chain hoist 4;

[0024] S3, the connection plate 21 is corrected by tightening the hand winch 4 and performing pyrotechnic correction and water cooling on the connection plate 21 to be corrected, and then the horizontality of the corrected connection plate 21 is measured. If it does not meet the requirements, the correction steps are repeated until the horizontality of the connection plate 21 meets the requirements.

[0025] By using the principle of lever, the problem of no strong structure inside the wall panel of the ship chimney section 2 and inability to use a portable oil pump to handle the deformation of the connecting plate 21 between the wall panel openings is overcome. Compared with the traditional method of relying on large crane lifting, the safety of this method is greatly improved, and it no longer relies on scarce crane resources to complete such deformation correction problems, thereby improving production efficiency.

[0026] The deformation forms of the connecting plate 21 with a large opening of the chimney segment 2 wall plate include that the middle of the connecting plate 21 is horizontal and the plate surfaces on both sides of the connecting plate 21 are concave inwards or tilted outwards.

[0027] The installation of the B-type code 3 is specifically as follows: when the plate surface on one side of the connecting plate 21 to be corrected is recessed inwardly, the B-type code 3 is set in the middle of the end surface of the connecting plate 21 on the same side opposite to the recessed plate surface; when the plate surface on one side of the connecting plate 21 to be corrected is warped outwardly, the B-type code 3 is set in the middle of the end surface of the connecting plate 21 on the opposite side to the warped plate surface.

[0028] The correction rod 1 includes a clamping portion 12 and a connecting portion 11. The connecting portion 11 is provided at the upper end of the clamping portion 12. The clamping portion 12 is a U-shaped groove as a whole. The side of the clamping portion 12 is fixedly connected to the connecting portion 11. The notch of the clamping portion 12 is horizontally arranged. A connecting hole is provided at the upper end of the connecting portion 11. The connecting plate 21 is a cross-shaped plate as a whole.

[0029] The center line of the connecting hole is arranged perpendicular to the groove direction of the clamping portion 12 .

[0030] The correction rod 1 is specifically installed as follows: the correction rod 1 is installed on the connecting plate 21 to be corrected, the clamping part 12 on the correction rod 1 is clamped on the plate surface to be corrected through the clamping groove, the correction rod 1 and the B-type code 3 on the opposite sides of the connecting plate 21 are arranged correspondingly, and the connecting line between the correction rod 1 and the corresponding B-type code 3 is perpendicular to the connecting plate 21.

[0031] While the hand chain hoist 4 is tightened, the connecting plate 21 to be corrected is simultaneously corrected by pyrotechnics and water-cooled. The correction sequence is to correct from the middle of the connecting plate 21 and gradually correct towards both ends of the connecting plate 21 .

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for pyrotechnic correction of segmented wall panels of ship chimneys, characterized in that: The method specifically comprises the following steps: S1, determine the deformation form of the connecting plate of the large opening of the chimney segment wall plate, and install B-type code on the connecting plates on both sides of the connecting plate to be corrected; S2, a correction rod is arranged on the end surface of the connecting plate to be corrected, and the correction rod is connected to the B-type code through a hand chain hoist; S3, the connection plate is corrected by tightening the hand chain hoist and performing pyrotechnic correction and water cooling on the connection plate to be corrected, and then the horizontality of the corrected connection plate is measured. If it does not meet the requirements, the correction steps are repeated until the horizontality of the connection plate meets the requirements.

2. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 1, characterized in that: The deformation forms of the connecting plate of the chimney segment wall panel with a large opening include the middle of the connecting plate being horizontal and the plate surfaces on both sides of the connecting plate being concave inwards or warping outwards.

3. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 2, characterized in that: The B-type code is installed specifically as follows: when the plate surface on one side of the connecting plate to be corrected is concave inward, a B-type code is set in the middle of the end surface of the connecting plate on the same side opposite to the concave plate surface; when the plate surface on one side of the connecting plate to be corrected is warped outward, a B-type code is set in the middle of the end surface of the connecting plate on the opposite side of the warped plate surface.

4. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 3, characterized in that: The correction rod includes a clamping part and a connecting part, the connecting part is arranged at the upper end of the clamping part, the clamping part is a U-shaped groove as a whole, the side of the clamping part is fixedly connected to the connecting part, the notch of the clamping part is arranged horizontally, a connecting hole is arranged at the upper end of the connecting part, and the connecting plate is a cross-shaped plate as a whole.

5. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 4, characterized in that: The center line of the connecting hole is arranged perpendicularly to the direction of the clamping portion groove.

6. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 5, characterized in that: The correction rod is specifically installed as follows: the correction rod is installed on the connecting plate to be corrected, the clamping part on the correction rod is clamped on the plate surface to be corrected through the clamping groove, the correction rod and the B-type codes on the opposite sides of the connecting plate are arranged correspondingly, and the connecting line between the correction rod and the corresponding B-type code is perpendicular to the connecting plate.

7. A method for pyrotechnic correction of a segmented wall plate of a ship chimney according to claim 6, characterized in that: While the hand chain hoist is tightened, the connecting plate to be corrected is simultaneously corrected with pyrotechnics and water-cooled. The correction sequence is to correct from the middle of the connecting plate and gradually correct towards both ends of the connecting plate.

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