JP6449052B2 - Submerged pump mounting structure and submerged pump mounting method - Google Patents

Description

  The present invention relates to a submerged pump mounting structure and a submerged pump mounting method.

  As an example of a submerged pump for unloading cargo such as petroleum that is contained and transported in a cargo tank (COT: Cargo Oil Tank), a device described in Patent Document 1 below is known. ing. In this submerged pump, an impeller is attached to the leading end side of a main part that penetrates the deck and enters the oil tank in the vertical direction, and the main part is driven by driving the impeller with a hydraulic motor. The oil is sucked into the discharge pipe from the suction port at the tip of the pipe, pumped up on the deck, and sent out from the discharge port of the discharge pipe to the outside of the ship.

JP 11-257296 A

  The submerged pump as described in Patent Document 1 is attached so that the suction port is located in the vicinity of the bottom wall of the oil tank so as to minimize the unpumping from the oil tank. For this reason, the submerged pump is mounted on the deck after the painting in the cargo tank has been completed.

  Normally, the submerged pump is attached by welding to the deck. In this case, in order to securely fix the submerged pump to the deck, the submerged pump is welded to the deck from both inside and outside the tank, and the spark generated when the submerged pump is welded to the deck in the tank. As a result, scorching may occur in the coating film applied in the oil tank. Since the burning of this coating film causes deterioration of the quality of the cargo oil contained in the cargo tank, after the submerged pump is welded to the deck, the occurrence of the charring in the cargo tank is confirmed and the burned portion is removed. It is necessary to repaint (also called touch-up).

  The present invention has been made to solve such problems, and a submerged pump mounting structure and a submerged pump capable of mounting a submerged pump on a deck without causing scorching in a cargo tank. It aims at providing the attachment method of a pump.

  A submerged pump mounting structure according to an aspect of the present invention includes a first pipe welded to a deck on a tank for storing cargo oil, and a second pipe connected to a first flange portion at the top of the first pipe. A second pipe having a tubular member, a hollow second flange portion welded to a side surface of the tubular member, and a third flange portion provided on an upper portion of the tubular member, The flange part is detachably fastened to the first flange part by the first fastening means, and the main part of the submerged pump is inserted vertically through the deck, the first pipe, and the second pipe into the oil tank. The submerged pump attachment portion is attached to the third flange portion.

  According to such a submerged pump mounting structure, the vertical positioning of the main portion of the submerged pump in the oil tank is performed on the second flange portion provided in the second pipe attached to the mounting portion of the submerged pump. On the other hand, it can be performed by adjusting the vertical position of the tubular member of the second tube. Here, since the first flange portion of the first pipe welded on the deck and the second flange portion of the second pipe are detachably fastened by the first fastening means, the second flange portion is After releasing the fastening with the first flange portion by the first fastening member, it can be welded to the positioned portion of the side surface of the tubular member outside the deck. On the other hand, since the first pipe does not contribute to the adjustment of the position of the main part of the submerged pump in the oil tank, the first pipe can be welded to the deck before painting the oil tank. Therefore, since it is not necessary to weld either the first pipe or the second pipe in the oil tank after painting, the submerged pump can be attached to the deck without burning in the oil tank.

  Here, it is preferable that the attachment part of a submerged pump and the 3rd flange part of a 2nd pipe are fastened so that attachment or detachment is possible by the 2nd fastening means. Thus, after the fastening between the attachment portion of the submerged pump and the third flange portion by the second fastening means is removed, the second flange portion is connected to the tubular member of the second pipe in a state where the submerged pump is not attached outside the deck. Can be easily welded to the side of

  Moreover, it is preferable that the diameter of a 1st pipe | tube is larger than the diameter of the tubular member of a 2nd pipe | tube. In this case, the strength of the mounting structure is increased, and the main part of the submerged pump can be easily entered into the cargo tank.

  According to another aspect of the present invention, there is provided a submerged pump mounting method in which a first pipe having a first flange portion at an upper portion is welded to a deck on a cargo tank in which cargo oil is accommodated, and is then placed under the deck. The oil tank to be provided is painted, the first fastening means is used to fasten the hollow second flange portion to the first flange portion, and the main portion of the submerged pump and the mounting portion of the submerged pump are interposed via the third flange portion. The first and second tubular members are inserted into the first pipe and the second flange portion along the vertical direction, and the vertical position of the tubular member relative to the second flange portion is adjusted and positioned. After the fastening between the first flange portion and the second flange portion is removed, the second flange portion is welded to the positioned portion of the side surface of the tubular member outside the deck to form the second pipe, The second frame of the second pipe by the fastening means Characterized by fastening the di portion to the first flange portion.

  According to such a submerged pump mounting method, after the second flange portion is released from fastening with the first flange portion by the first fastening member, the second flange portion is placed outside the deck on the positioned portion of the side surface of the tubular member. Can be welded. On the other hand, since the first pipe does not contribute to the adjustment of the position of the main part of the submerged pump in the oil tank, the first pipe can be welded to the deck before painting the oil tank. Therefore, since it is not necessary to weld either the first pipe or the second pipe in the oil tank after painting, the submerged pump can be attached to the deck without burning in the oil tank.

  Here, the attachment portion of the submerged pump is detachably fastened to the third flange portion on the upper portion of the tubular member by the second fastening means, and the second fastening means is fastened before the fastening of the first fastening means is released. After removing the submerged pump mounting portion from the third flange portion and the submerged pump mounting portion from the third flange portion, the first fastening means is unfastened and the second flange portion is After the first flange portion is removed from the first flange portion and the second flange portion and the tubular member are welded outside the deck, the second flange portion is fastened to the first flange portion by the first fastening means, and then the main portion of the submerged pump is After inserting the main part of the submerged pump into the oil tank along the vertical direction after inserting the pipe and the second pipe along the vertical direction, the second fastening means attaches the mounting part of the submerged pump to the second pipe. The first It is preferable to fasten the flange portion. Thereby, the 2nd flange part can be welded to the side surface of a tubular member in the state where the submerged pump is not fastened outside the deck, and the 2nd pipe can be formed easily.

  As described above, according to the present invention, it is possible to provide a submerged pump mounting structure and a submerged pump mounting method in which the submerged pump can be mounted on the deck without scorching in the cargo tank.

It is a schematic sectional drawing which shows the attachment structure of the submerged pump which concerns on embodiment of this invention. It is a figure for demonstrating the attachment method of the submerged pump which concerns on embodiment of this invention. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a figure for demonstrating the attachment method of the submerged pump following FIG. It is a schematic sectional drawing which shows the attachment method of the submerged pump which concerns on a comparative example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a submerged pump mounting structure and mounting method according to the present invention will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same part or an equivalent part, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a schematic cross-sectional view showing a submerged pump mounting structure according to an embodiment of the present invention. As shown in FIG. 1, the submerged pump 1 is a pump for pumping cargo oil such as oil in a cargo tank 11 provided under a deck 10 of a ship to the outside of the ship when unloading. It is fixed by the mounting structure 100 provided on the top. The submerged pump 1 includes a main portion 2 that penetrates the deck 10 and enters the oil tank 11 along the vertical direction, and a mounting portion 3 that is attached to the mounting structure 100 outside the deck 10. ing. The main part 2 and the attachment part 3 have a support pipe 5 and a discharge pipe 6 extending along the vertical direction, and the support pipe 5 and the discharge pipe 6 are integrally provided with the attachment part 3, The mounting portion 3 is configured and fixed to the deck 10 side by a flange 4 extending along the horizontal direction. A hydraulic motor 7 is provided at the front end side of the support pipe 5, and the impeller 8 provided at the lower end is rotated by driving the hydraulic motor 7, so that the suction pipe 2 a at the front end of the main portion 2 is inserted into the discharge pipe 6. The cargo oil can be sucked up, pumped up on the deck 10, and sent out from the discharge port 6a of the discharge pipe 6 to the outside of the ship.

  The deck 10 is provided with an opening 10 a for allowing the submerged pump 1 to enter the oil tank 11.

  A plurality of oil tanks 11 are provided in the ship, and are tanks having a substantially rectangular tube shape or a substantially cylindrical shape for storing the oil. The height in the vertical direction and the width in the horizontal direction of the oil tank 11 are, for example, several tens of meters. The inner surface (entire surface) of the oil tank 11 is coated to suppress the quality deterioration of the stored oil. In addition, the suction port 2a of the main part 2 is spaced apart in the vicinity of the bottom wall 11a of the oil tank 11.

  In order to reinforce the deck 10 and prevent bending, a large number of aggregates (brackets) 12 projecting along the vertical direction from the bottom of the deck 10 and extending in the horizontal direction are provided under the deck 10. . The aggregate 12 is provided not only in the cargo tank 11 but also outside the cargo tank 11. The aggregate 12 provided in the oil tank 11 is coated to suppress deterioration of the quality of the oil as with the inner surface of the oil tank 11. As shown in FIG. 1, the tip in the vertical direction of the aggregate 12 may be bent like a bowl.

  The mounting structure 100 provided on the deck 10 is sandwiched between a first pipe 21 welded to the deck 10, a second pipe 31 connected to the first pipe 21, and the first pipe 21 and the second pipe 31. An annular sealing member (gasket) 41 for preventing leakage of cargo oil, a first fastening means 42 for detachably fastening the first pipe 21 and the second pipe 31, and the submerged pump 1. The second fastening means 43 for detachably fastening the flange 4 and the second pipe 31 constituting the mounting portion 3 and the second pipe 31 and the flange 4 are sandwiched between them to prevent leakage of cargo oil. An annular sealing member (gasket) 44 is provided. The main portion 2 of the submerged pump 1 is inserted through the first tube 21, the second tube 31, and the sealing members 41 and 44 of the mounting structure 100. In FIG. 1, bolts and nuts are used as the first fastening means 42 and the second fastening means 43.

  The first pipe 21 has a tubular member 22 that is welded to the deck 10 and stands, and a flange portion (first flange portion) 23 that is provided on the tubular member 22. The tubular member 22 is, for example, a metal pipe that is a substantially circular tube or a substantially rectangular tube, and is provided so as to surround the opening 10a provided in the deck 10 in a plan view. The flange portion 23 is an annular plate member, and is welded and integrated with the upper portion of the tubular member 22. The flange portion 23 protrudes both inward and outward of the tubular member 22, and an opening portion 23 a for inserting the first fastening means 42 is provided in a portion protruding outward of the flange portion 23. A plurality of spaced apart parts are formed along the direction.

  The second pipe 31 includes a tubular member 32 extending in the vertical direction, a flange portion (second flange portion) 33 welded to the outer surface of the tubular member 32, and a flange portion provided on the upper portion of the tubular member 32. (Third flange portion) 34. The tubular member 32 is made of, for example, a metal and is a substantially circular or substantially rectangular pipe. That is, the diameter of the tubular member 32 of the second pipe 31 is smaller than the diameter of the tubular member 22 of the first pipe 21.

  The flange portion 33 of the second pipe 31 is an annular plate-like member projecting outward from the tubular member 32, and is integrated with the tubular member 32 after the tubular member 32 is positioned in the vertical direction. Welded. In the flange portion 33, a plurality of openings 33a for inserting the first fastening means 42 are formed at equal positions along the circumferential direction. The opening 33a is positioned so as to overlap the opening 23a of the flange 23 of the first pipe 21 along the vertical direction. Accordingly, the flange portion 33 of the second pipe 31 is detachably fastened to the flange portion 23 of the first pipe 21 by the first fastening means 42.

  The sealing member 41 is a member having oil resistance, is formed in an annular shape, and is sandwiched so as to fill a gap formed between the flange portions 23 and 33. The sealing member 41 has a plurality of openings as in the flange portions 23 and 33, and is detachably fastened by the first fastening means 42.

  The flange portion 34 of the second pipe 31 is an annular plate-like member, and is welded and integrated with the upper portion of the tubular member 32. The flange portion 34 protrudes both inward and outward of the tubular member 32, and an opening 34 a through which the second fastening means 43 is inserted surrounds the portion protruding outward of the flange portion 34. A plurality of spaced apart parts are formed along the direction. The opening 34 a is positioned so as to overlap with the opening 4 a provided in the flange 4 constituting the mounting portion 3 of the submerged pump 1 along the vertical direction. Thereby, the flange part 34 of the 2nd pipe | tube 31 is fastened to the flange 4 which comprises the attachment part 3 of the submerged pump 1 by the 2nd fastening means 43 so that attachment or detachment is possible.

  The sealing member 44 is a member having oil resistance, is formed in an annular shape, and is sandwiched so as to fill a gap formed between the flange portion 34 and the flange 4. The sealing member 44 has a plurality of openings as in the flange portion 34 and the flange 4, and is detachably fastened by the second fastening means 43.

  Next, the detail of the attachment method to the ship of the submerged pump 1 using the attachment structure 100 which concerns on this embodiment is demonstrated, using FIGS. 2-8 is a figure for demonstrating the attachment method to the ship of the submerged pump using the attachment structure which concerns on this embodiment.

  First, as shown in FIG. 2, the first pipe 21 is welded so as to stand on the deck 10 on the cargo tank 11. At this time, the flange portion 23 integrated with the tubular member 22 by welding is positioned on the upper portion of the tubular member 22, and the tubular member 22 is disposed so as to surround the opening 10a of the deck 10 in a plan view. After welding the tubular member 22 of the 1st pipe | tube 21 on the deck 10, the coating for suppressing the quality deterioration of the cargo oil accommodated is given to the cargo tank 11. FIG.

  Next, as shown in FIG. 3, the sealing member 41 and the flange portion 33 (the flange portion 33 of the subsequent second pipe 31) are fastened to the flange portion 23 using the first fastening means 42. At this time, the sealing member 41 is fastened so as to be sandwiched between the flange portions 23 and 33.

  Next, as shown in FIG. 4, the flange portion 34 welded and integrated with the tubular member 32 is fastened to the flange 4 constituting the attachment portion 3 of the submerged pump 1 using the second fastening means 43. . At this time, the sealing member 44 is sandwiched between the flange 4 and the flange portion 34 and fastened. Thereafter, the main portion 2 of the submerged pump 1 is inserted through the opening 10 a of the deck 10, the first pipe 21, the sealing member 41, and the flange portion 33 along the vertical direction. At this time, the lower part of the tubular member 32 attached to the flange 4 constituting the attachment part 3 of the submerged pump 1 via the flange part 34 is similar to the main part 2 in the first pipe 21 and the sealing member. 41 and the flange portion 33 are inserted along the vertical direction.

  Next, as shown in FIG. 5, the vertical position of the tubular member 32 is adjusted and positioned with respect to the flange portion 33. At this time, the vertical position of the tubular member 32 with respect to the flange portion 33 is determined so that the suction port 2a of the main portion 2 of the submerged pump 1 is positioned in the vicinity of the bottom wall 11a of the oil tank 11. After the positioning, the flange portion 33 is temporarily welded to the positioned portion on the outer side surface of the tubular member 32 on the deck 10 and outside the oil tank 11. For example, the temporary welding is performed by spot welding a part (several places) of the flange portion 33.

  Next, as shown in FIG. 6, the fastening of the second fastening means 43 is removed, and the flange 4 constituting the attachment part 3 of the submerged pump 1 is removed from the flange part 34 of the second pipe 31. Thereby, the main part 2 of the submerged pump 1 that has entered the cargo tank 11 is disposed outside the deck 10. On the other hand, the tubular member 32 that is temporarily welded to the flange portion 33 is connected to the first pipe 21 via the flange portion 33 by the first fastening means 42.

  Next, as shown in FIG. 7, the fastening of the first fastening means 42 is removed, and the flange portion 33 is removed from the flange portion 23 of the first pipe 21. As a result, the flange portion 33 and the tubular member 32 that is temporarily welded to the flange portion 33 are removed from the first tube 21 and placed outside the deck 10. And the 2nd pipe | tube 31 is formed by carrying out the main welding of the tubular member 32 and the flange part 33 out of the deck 10. FIG. At this time, the flange portion 33 is firmly fixed to the tubular member 32 by welding from both sides of the flange portion 33 in the vertical direction.

  Next, as shown in FIG. 8, the flange portion 33 of the second pipe 31 is fastened to the flange portion 23 of the first pipe 21 again by the first fastening means 42. After the second pipe 31 is connected to the first pipe 21 to form the mounting structure 100, the main part 2 of the submerged pump 1 is moved up and down to the opening 10 a of the deck 10, the first pipe 21, and the second pipe 31. It inserts along a direction and makes it approach again into the cargo tank 11 along an up-down direction. Then, the flange 4 constituting the attachment portion 3 of the submerged pump 1 is fastened to the flange portion 34 of the second pipe 31 by the second fastening means 43. Thereby, the submerged pump 1 can be attached to the ship while closing the opening 10a of the deck 10.

  Next, the operation and effect of the mounting structure 100 of the submerged pump 1 according to this embodiment and the mounting method of the submerged pump 1 using the mounting structure 100 will be described in comparison with a comparative example.

  First, with reference to FIG. 9, the attachment method of the submerged pump 1 which concerns on a comparative example is demonstrated. A tubular member 51 is fastened by a second fastening means 43 to the flange 4 constituting the attachment portion 3 of the submerged pump 1 according to the comparative example. The tubular member 51 is inserted through the opening 10 a of the deck 10 together with the main portion 2 of the submerged pump 1 and is welded to the deck 10. Specifically, the main portion 2 and the tubular member 51 of the submerged pump 1 are made to enter the oil tank 11 through the opening 10a of the deck 10 along the vertical direction, so that the submerged pump 1 in the oil tank 11 is The main part 2 is positioned in the vertical direction. After positioning the main portion 2, the submerged pump 1 is attached to the ship by welding the tubular member 51 directly to the deck 10 and fixing it. Also in the comparative example, the submerged pump 1 is attached after the painting in the oil tank 11 is completed so that the suction port 2a at the tip of the main portion 2 can be disposed in the vicinity of the bottom wall 11a of the oil tank 11. In order to securely fix the submerged pump 1 to the deck 10, the tubular member 51 attached to the submerged pump 1 is welded to the deck 10 from both inside and outside the cargo tank 11. The spark generated when welding the pump 1 to the deck 10 causes scorching to the coating film applied in the oil tank 11. In this case, it is necessary to repaint the burnt portion in the cargo tank 11. In addition, when the tubular member 51 and the aggregate 12 are close to each other as illustrated, it is difficult to weld the deck 10 and the tubular member 51 from within the oil tank 11.

  On the other hand, according to the mounting structure 100 of the submerged pump 1 according to the present embodiment, the first pipe 21 welded to the deck 10 on the cargo tank 11 in which cargo oil is accommodated, and the upper flange of the first pipe 21. A second pipe 31 connected to the portion 23, and the second pipe 31 includes a tubular member 32, a flange portion 33 welded to a side surface of the tubular member 32, and a flange provided on an upper portion of the tubular member 32. The flange portion 33 is detachably fastened to the flange portion 23 by the first fastening means 42. The main portion 2 of the submerged pump 1 includes the deck 10, the first pipe 21, and the first Since the two pipes 31 are inserted to enter the oil tank 11 along the vertical direction, and the attachment part 3 of the submerged pump 1 is attached to the flange part 34, the oil tank 11 of the main part 2 of the submerged pump 1. Positioning in the vertical direction The flange portion 33 of the second pipe 31 attached to the attachment portion 3 of the submerged pump 1 can be adjusted by adjusting the position of the tubular member 32 of the second pipe 31. After the fastening with the flange portion 23 by the first fastening means 42 is released, the outer surface of the tubular member 32 positioned can be welded outside the deck 10. On the other hand, since the first pipe 21 does not contribute to the adjustment of the position of the main part 2 of the submerged pump 1 in the oil tank 11, the first pipe 21 is welded to the deck 10 before painting the oil tank 11. Can do. Therefore, since it is not necessary to weld both the first pipe 21 and the second pipe 31 in the painted tank 11, the submerged pump 1 is attached to the deck 10 without burning in the tank 11. be able to.

  Moreover, according to the attachment method of the submerged pump 1 which concerns on this embodiment, after welding the 1st pipe | tube 21 which has the flange part 23 in the upper part to the deck 10 on the cargo tank 11 in which cargo oil is accommodated, deck 10 is painted on the tank 10 and the flange portion 33 is fastened to the flange portion 23 by the first fastening means 42, and the main portion 2 of the submerged pump 1 and the mounting portion 3 of the submerged pump 1 are flanged. The tubular member 32 attached via the portion 34 is inserted into the first pipe 21 and the flange portion 33 along the vertical direction, and the vertical position of the tubular member 32 with respect to the flange portion 33 is adjusted and positioned. After the fastening of the flange portion 23 and the flange portion 33 by the first fastening means 42 is removed, the flange portion 33 is welded to the positioned portion of the side surface of the tubular member 32 outside the deck 10 to Since the pipe 31 is formed and the flange portion 33 of the second pipe 31 is fastened to the flange portion 23 by the first fastening means 42, both the first pipe 21 and the second pipe 31 are welded in the oil tank 11 after painting. There is no need to do. Therefore, the submerged pump 1 can be attached to the deck 10 without burning in the oil tank 11.

  Furthermore, according to the present embodiment, the flange 4 constituting the attachment portion 3 of the submerged pump 1 and the flange portion 34 of the second pipe 31 are detachably fastened by the second fastening means 43. 2 After the fastening of the flange 4 and the flange portion 34 constituting the mounting portion 3 of the submerged pump 1 by the fastening means 43 is removed, the flange portion 33 is formed in a tubular member in a state where the submerged pump 1 is not attached outside the deck 10. The second pipe 31 can be formed by being easily welded to the outer surface of 32.

  Further, according to the present embodiment, since the diameter of the tubular member 22 of the first pipe 21 is larger than the diameter of the tubular member 32 of the second pipe 31, the strength of the mounting structure 100 is increased and the submerged pump 1 is increased. The main portion 2 can be easily entered into the oil tank 11.

  In addition, according to this embodiment, since welding is not performed in the oil tank 11, the aggregate 12 may be provided in the vicinity of the opening 10a, and thereby the deck 10 around the opening 10a is aggregated. 12 can be sufficiently reinforced. Moreover, in this embodiment, although the tubular member 22 and the aggregate 12 of the 1st pipe | tube 21 do not mutually overlap in the up-down direction, you may overlap each other. In this case, the strength of the mounting structure 100 can be increased. Furthermore, by using the mounting structure 100 of the present embodiment, the main portion 2 of the submerged pump 1 can be easily entered without thinning out the aggregate 12 arranged around the opening 10a.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above embodiment, as a particularly preferred example, the flange portion 34 and the flange 4 constituting the attachment portion 3 are detachably fastened by the second fastening means 43. The flange portion 34 and the flange 4 are, for example, It may be integrated by welding. In this case, when the vertical fastening of the tubular member 32 with respect to the flange portion 33 is performed, the fastening of the first fastening means 42 is released, and the main portion 2 of the submerged pump 1 is pulled out of the deck 10 from the cargo tank 11. The tubular member 32 to which the flange portion 33 is temporarily welded is simultaneously extracted. Then, the flange portion 33 is finally welded to the tubular member 32 in a state where it is integrated with the submerged pump 1 on the deck 10.

  Moreover, in the said embodiment, the flange part 23 of the 1st pipe | tube 21 does not necessarily need to be welded to the tubular member 22, and the tubular member 22 and the flange part 23 may be integrally molded. Similarly, the tubular member 32 and the flange portion 34 of the second pipe 31 may be integrally formed.

  Moreover, the thickness of the sealing members 41 and 44 which concern on the said embodiment should just be the thickness which can fully prevent the leakage of the cargo oil in the cargo tank 11. Alternatively, each of the sealing members 41 and 44 may be a stack of a plurality of annular members in the thickness direction. In these cases, the position of the submerged pump 1 in the axial direction or the horizontal direction can be finely adjusted by adjusting at least one of the thickness and number of the sealing members 41 and 44, respectively. Further, an epoxy resin liner may be used instead of the sealing members 41 and 44.

  In addition, the diameter of the first tube 21 according to the embodiment may be smaller than the diameter of the second tube 31. In this case, the flange portion 33 is welded to the inner side surface of the tubular member 32 of the second pipe 31, and becomes a hollow plate-like member projecting inward of the tubular member 32.

  Moreover, according to the said embodiment, after positioning the tubular member 32 with respect to the flange part 33, you may mark the tubular member 32, for example, without temporarily welding the flange part 33 to the tubular member 32. FIG. In this case, after the tubular member 32 is first extracted from the flange portion 33, the fastening of the first fastening means 42 is released and the flange portion 33 is removed from the flange portion 23 of the first pipe 21. Then, outside the deck 10, the flange portion 33 is welded to the positioned portion of the side surface of the tubular member 32 to form the second pipe 31.

  Moreover, according to the said embodiment, the sealing member 41 and the flange part 33 may be fastened by the flange part 23 of the 1st pipe | tube 21 by the 1st fastening means 42 before the coating of the cargo tank 11. Alternatively, the sealing member 41 and the flange portion 33 may be fastened to the flange portion 23 of the first tube 21 by the first fastening means 42 before the first tube 21 is welded to the deck 10.

  Moreover, the 1st fastening means 42 and the 2nd fastening means 43 which concern on the said embodiment are not restricted to a volt | bolt and a nut, Other detachable fastening means may be sufficient.

  DESCRIPTION OF SYMBOLS 1 ... Submerged pump, 2 ... Main part, 2a ... Suction port, 3 ... Mounting part, 4 ... Flange, 5 ... Support pipe, 6 ... Discharge pipe, 6a ... Discharge port, 7 ... Hydraulic motor, 8 ... Impeller, DESCRIPTION OF SYMBOLS 10 ... Deck, 11 ... Oil tank, 12 ... Aggregate, 21 ... 1st pipe, 23 ... Flange part (1st flange part), 31 ... 2nd pipe, 32 ... Tubular member, 33 ... Flange part (2nd flange) Part), 34 ... flange part (third flange part), 41, 44 ... sealing member, 42 ... first fastening means, 43 ... second fastening means, 100 ... mounting structure.

Claims (5)

A first pipe welded to a deck on a cargo tank in which cargo oil is stored;
A second pipe connected to the first flange part on the upper part of the first pipe,
The second pipe has a tubular member, a hollow second flange portion welded to a side surface of the tubular member, and a third flange portion provided on an upper portion of the tubular member,
The second flange portion is detachably fastened to the first flange portion by first fastening means,
The main part of the submerged pump penetrates the deck, the first pipe, and the second pipe and enters the cargo tank along the vertical direction,
The attachment part of the submerged pump is attached to the third flange part,
Submerged pump mounting structure.   The submerged pump mounting structure according to claim 1, wherein the mounting portion of the submerged pump and the third flange portion are detachably fastened by a second fastening means.   The submerged pump mounting structure according to claim 1 or 2, wherein a diameter of the first pipe is larger than a diameter of the tubular member of the second pipe. After welding the first pipe having the first flange portion at the upper part to the deck on the cargo tank in which cargo oil is stored, the cargo tank provided below the deck is painted,
The first fastening means fastens the hollow second flange portion to the first flange portion,
A main part of the submerged pump and a tubular member attached to the attachment part of the submerged pump via a third flange part are inserted into the first pipe and the second flange part along the vertical direction. Adjusting the vertical position of the tubular member with respect to the second flange portion,
After the fastening between the first flange portion and the second flange portion by the first fastening means is removed, the second flange portion is welded to the positioned portion of the side surface of the tubular member outside the deck. To form a second tube,
Fastening the second flange portion of the second pipe to the first flange portion by the first fastening means;
How to install the submerged pump. The attachment part of the submerged pump is detachably fastened to the third flange part on the upper part of the tubular member by a second fastening means,
Before unfastening the first fastening means, unfasten the second fastening means, remove the attachment portion of the submerged pump from the third flange portion,
After removing the attachment portion of the submerged pump from the third flange portion, removing the fastening of the first fastening means, removing the second flange portion from the first flange portion,
After welding the second flange part and the tubular member outside the deck, after fastening the second flange part to the first flange part by the first fastening means, the main part of the submerged pump, Inserting the first tube and the second tube along the vertical direction;
After the main portion of the submerged pump has entered the oil tank along the vertical direction, the attachment portion of the submerged pump is fastened to the third flange portion of the second pipe by the second fastening means. To
The submerged pump mounting method according to claim 4.

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