CN110267871B - Fixing device for drainage nozzle - Google Patents

Fixing device for drainage nozzle Download PDF

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Publication number
CN110267871B
CN110267871B CN201880010933.5A CN201880010933A CN110267871B CN 110267871 B CN110267871 B CN 110267871B CN 201880010933 A CN201880010933 A CN 201880010933A CN 110267871 B CN110267871 B CN 110267871B
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China
Prior art keywords
wall
nozzle
pipe
drain
side pipe
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Active
Application number
CN201880010933.5A
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Chinese (zh)
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CN110267871A (en
Inventor
金子毅
香川晴治
渡边祐辅
牛久哲
竹内康浩
佐佐木良三
横尾和俊
神山直行
吉元贵志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Shipbuilding Co Ltd
Mitsubishi Power Ltd
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Mitsubishi Shipbuilding Co Ltd
Mitsubishi Power Ltd
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Publication of CN110267871A publication Critical patent/CN110267871A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B81/00—Repairing or maintaining vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)
  • Treating Waste Gases (AREA)

Abstract

A water discharge nozzle fixing device for fixing a water discharge nozzle for mixing seawater with desulfurized wastewater discharged from a desulfurization device provided in a ship body by stirring, comprising: a hull outer wall having an opening on a lower side than a water line; and an outer wall side pipe having an internal space over the entire axial direction, having openings at both axial end portions, and being cylindrical, one axial end portion being integrally fixed to an opening edge portion of the hull outer wall, the opening at the one axial end portion side being communicated with the outside of the hull outer wall, and the other axial end portion being disposed inside the hull outer wall, the water discharge nozzle being provided inside the outer wall side pipe.

Description

Fixing device for drainage nozzle
Technical Field
The present disclosure relates to a drain nozzle fixing device for fixing a drain nozzle that stirs and mixes desulfurized drain water discharged from a desulfurization device provided in a ship body with seawater.
Background
In recent years, along with the enhancement of exhaust gas control for ships, it is mandatory to use fuel oil having a sulfur content of 0.1% or less in the sea area of emission control (ECA sea area), or alternative measures having effects equivalent thereto. In 2020, it was obligated to use fuel oil having a sulfur content of 0.5% or less in general sea areas, or substitute measures having the same effect as that of fuel oil. As an alternative to the above, it has been confirmed that a desulfurization apparatus capable of reducing sulfur oxides in exhaust gas discharged from a main internal combustion engine or a plurality of power generation internal combustion engines/boilers to a limit value or less is used. Here, low-sulfur fuel oil is more expensive than conventional heavy oil fuel oil, and has a background of being opaque to future increasing demand for supply capability. Therefore, in order to continue to use heavy oil fuel oil which is inexpensive and has sufficient supply capacity, a desulfurization device is installed in a ship (see patent documents 1 and 2).
Further, as the control of the ship, there is a pH control of the desulfurization wastewater discharged from the desulfurization apparatus provided in the ship, and at the current time, the condition is that the pH value is 6.5 or more at a point 4m from the ship outboard. In order to satisfy the above control, conventionally, a discharge nozzle that promotes mixing of the desulfurized waste water with seawater around the ship is provided at an outlet of a discharge pipe through which the desulfurized waste water discharged from the desulfurization device flows. A conventional drain nozzle includes a cylindrical outer peripheral portion and a nozzle portion provided inside the outer peripheral portion. One end of the outer peripheral portion is integrally joined and fixed to the hull outer wall by welding, and the other end is fixed to the drain pipe. More specifically, the drain nozzle has a flange portion protruding outward from the outer peripheral surface at the other end portion of the outer peripheral portion, and the flange portions are fastened to each other and fixed to the drain pipe in a state where the flange portions are in contact with the flange portions of the drain pipe.
Prior art documents
Patent document
Patent document 1: japanese patent No. 5789321
Patent document 2: japanese laid-open patent publication No. 9-239233
Disclosure of Invention
Problems to be solved by the invention
However, the conventional drain nozzle is attached to the outlet of the drain pipe as a part of the drain pipe, and the outer peripheral portion directly connects the hull outer wall and the drain pipe, and therefore, the conventional drain nozzle is a so-called strength member which requires strength as a structural object of the ship. Therefore, the water discharge nozzle as the strength member needs to take time to check the joint state of the welded portion every time welding. In addition, since the conventional drain nozzle is integrally joined to the hull outer wall by welding, it is necessary to weld the hull outer wall during the mounting work. In addition, in the conventional drain nozzle, it is necessary to weld a new drain nozzle to the hull outer wall after the welded portion between the old drain nozzle and the hull outer wall is removed by, for example, cutting at the time of replacement work. Therefore, the conventional fixing method of the drain nozzle has a problem that it takes much labor and time to attach and replace the drain nozzle.
Patent document 1 discloses a scrubber (wet gas cleaning device) for cleaning exhaust gas discharged from an engine for propelling a ship, for example. Further, patent document 1 discloses that when a cleaning liquid used in a scrubber is discharged to the outside, a neutralizing agent is put into the cleaning liquid so as to satisfy a discharge control of pH value, thereby adjusting the pH value. Further, patent document 2 discloses a flue gas desulfurization method including: an absorption step of bringing the flue gas into gas-liquid contact with seawater to dissolve sulfurous acid gas in the flue gas into the seawater as sulfurous acid; an oxidation step of oxidizing the sulfurous acid to sulfuric acid; a neutralization step of adding an alkaline agent to the seawater during or after the oxidation step to adjust the pH of the seawater; and a releasing step of releasing the seawater after the neutralization step into the ocean. However, neither patent document 1 nor patent document 2 focuses on the fixing method of the drain nozzle, and does not mention the above-described problem.
In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a drain nozzle fixing device capable of facilitating the mounting work and the replacement work of the drain nozzle.
Means for solving the problems
(1) A discharge nozzle fixing device according to at least one embodiment of the present invention is a discharge nozzle fixing device for fixing a discharge nozzle that stirs and mixes desulfurized discharge water discharged from a desulfurization device provided in a ship body with seawater, the discharge nozzle fixing device including:
a hull outer wall having an opening at a lower side than a water line; and
a cylindrical outer wall side pipe having an internal space over an entire axial direction and openings at both axial end portions, one axial end portion being integrally fixed to an opening edge portion of the hull outer wall, the opening at the one end portion side communicating with an outside of the hull outer wall, and the other axial end portion being disposed inside the hull outer wall,
the drain nozzle is provided inside the outer wall side pipe.
According to the configuration of the above (1), the outer wall side pipe is formed in a cylindrical shape having an internal space over the entire axial direction and having openings communicating with the internal space at both axial end portions. One axial end of the outer wall side pipe is integrally fixed to an edge of an opening disposed below a waterline of the hull outer wall. The other end portion in the axial direction of the outer wall side pipe is disposed inside the hull outer wall. Therefore, the outer wall side pipe can provide the drain nozzle inserted from any one of the openings at both ends in the axial direction in the internal space. The discharge nozzle provided inside the outer wall side pipe can mix the desulfurized wastewater flowing in from the opening at the other end side in the axial direction with the seawater by stirring. Further, unlike the conventional drain nozzle described above, the drain nozzle is not integrally joined to the hull outer wall or the pipe by welding, and therefore, the mounting operation and the replacement operation can be easily performed.
Therefore, according to the above configuration, the mounting work and the replacement work of the drain nozzle can be easily performed.
Further, according to the configuration of the above (1), the drain nozzle attached to the drain nozzle fixing device is not integrally fixed to the hull outer wall unlike the above conventional drain nozzle, and does not need to have the strength as in the conventional drain nozzle. Therefore, the drain nozzle can improve the degree of freedom of material selection and replacement frequency compared to the conventional drain nozzle. For example, Fiber Reinforced Plastic (FRP) or a polymer material can be used as a material of the drain nozzle, and thus the drain nozzle can be reduced in cost and weight. Further, since the drain nozzle is not a strength member unlike the conventional drain nozzle described above, deterioration and wear of the drain nozzle can be dealt with by regular nozzle replacement, and thus the material of the drain nozzle can be selected in consideration of this point.
(2) In several embodiments, in the structure of the above (1),
the drain nozzle includes a cylindrical outer peripheral portion and a nozzle portion provided inside the outer peripheral portion,
the outer peripheral surface of the outer peripheral portion is disposed without a gap with respect to an inner surface of the outer wall-side pipe.
According to the configuration of the above (2), since the outer peripheral surface of the outer peripheral portion formed in the cylindrical shape of the drain nozzle is disposed without a gap with respect to the inner surface of the outer wall side pipe, positioning with respect to the outer wall side pipe can be performed only by inserting the inner portion of the outer wall side pipe in the mounting operation or the replacement operation. Therefore, the mounting work and the replacement work of the drain nozzle can be efficiently performed. Further, since the outer peripheral surface of the discharge nozzle is disposed without a gap with respect to the inner surface of the outer wall side pipe, it is possible to prevent a part of the desulfurized waste water from flowing into a gap formed between the inner surface of the outer wall side pipe and the outer peripheral surface of the outer peripheral portion of the discharge nozzle and staying, and the staying part of the desulfurized waste water blocks smooth flow of the other desulfurized waste water.
(3) In several embodiments, in the structure of the above (2),
the drain nozzle fixing device further includes a drain nozzle suppressing member that is detachably attached to the vicinity of the opening of the hull outer wall and prevents the drain nozzle from being detached from the opening of the one end portion side of the outer wall side pipe to the outside of the outer wall side pipe.
According to the structure of the above (3), since the drainage nozzle suppressing member is detachably provided in the vicinity of the opening provided in the hull outer wall, the drainage nozzle can be easily attached and replaced from the opening at the one end portion side of the outer wall side pipe by detaching the drainage nozzle suppressing member. Further, by attaching the drain nozzle suppressing member, the drain nozzle can be prevented from being detached from the opening at the one end portion side of the outer wall side pipe to the outside of the outer wall side pipe.
(4) In several embodiments, in the structure of the above (3),
the outer wall side pipe includes a convex portion protruding inward from an inner side surface of the other end portion,
the drain nozzle is provided inside the outer wall side pipe in a state where one end surface of the outer peripheral portion abuts against the drain nozzle suppressing member and the other end surface of the outer peripheral portion abuts against or approaches the convex portion.
According to the configuration of the above (4), since the drain nozzle is provided inside the outer wall side pipe in a state where one end surface of the outer peripheral portion is in contact with the drain nozzle suppressing member and the other end surface of the outer peripheral portion is in contact with or close to the convex portion of the outer wall side pipe, the operator can perform positioning in the axial direction of the drain nozzle only by inserting the drain nozzle into the inside of the outer wall side pipe from the opening at one end portion side of the outer wall side pipe to install the drain nozzle suppressing member, and therefore, the installation work and the replacement work of the drain nozzle can be easily performed.
(5) In several embodiments, in the structure of the above (2),
the drain nozzle fixing device further includes an inner pipe connected to the other end of the outer wall pipe,
the drain nozzle includes a 1 st flange portion protruding outward from the outer peripheral surface at the other end portion of the outer peripheral portion opposite to the one end portion on the hull outer wall side,
the drain nozzle is detachably fixed to the outer wall side pipe by fastening the outer wall side pipe and the inner pipe with the first flange portion 1 interposed between the other end portion of the outer wall side pipe and one end portion of the inner pipe on the hull outer wall side.
According to the configuration of the above (5), since the positioning in the axial direction of the drain nozzle can be performed only by fixing the 1 st flange portion of the drain nozzle to the outer wall side pipe, the mounting work and the replacement work of the drain nozzle can be easily performed. Further, since the positioning in the circumferential direction of the drain nozzle is performed by only fixing the 1 st flange portion of the drain nozzle to the outer wall side pipe and restricting the rotational movement around the axis of the drain nozzle, the drain nozzle itself does not rotate when the desulfurized drain is agitated and mixed with the sea water, and therefore the desulfurized drain can be efficiently agitated. Further, the drain nozzle can be easily detached from the outer wall side pipe by releasing the fastening of the outer wall side pipe and the inner side pipe. Further, the drain nozzle fixing device does not need to be provided with a drain nozzle suppressing member, and therefore the number of components can be reduced.
(6) In several embodiments, in the structure of the above (5),
the outer wall side pipe includes a 2 nd flange portion projecting outward from an outer side surface of the other end portion,
the inner pipe includes a 3 rd flange portion protruding outward from an outer side surface of the one end portion,
the drain nozzle is detachably fixed to the outer wall side pipe by the 2 nd flange portion and the 3 rd flange portion being fastened with the 1 st flange portion sandwiched between the 2 nd flange portion and the 3 rd flange portion.
According to the configuration of the above (6), the drain nozzle is fixed to the outer wall side pipe by fastening the 2 nd flange portion and the 3 rd flange portion in a state where the 1 st flange portion is sandwiched between the 2 nd flange portion of the outer wall side pipe and the 3 rd flange portion of the inner pipe. Therefore, the 1 st flange portion is fixed in a state of surface contact with the 2 nd flange portion and the 3 rd flange portion, and therefore the drain nozzle can be firmly fixed to the outer wall side pipe.
(7) In several embodiments, in the structure of the above (5) or (6),
the inner pipe includes:
a 1 st inner pipe connected to the outer wall side pipe; and
a 2 nd inner pipe connected to the 1 st inner pipe,
the 1 st inner pipe is formed to have a length dimension in the axial direction longer than the drain nozzle.
According to the configuration of the above (7), since the 1 st inner pipe is formed to have a longer length dimension in the axial direction than the drain nozzle, the drain nozzle can be removed from the outer wall side pipe only by removing the 1 st inner pipe from the outer wall side pipe and the 2 nd inner pipe. Therefore, the mounting work and the replacement work of the drain nozzle can be easily performed.
(8) In several embodiments, in the structure of the above (4),
the discharge nozzle fixing device further includes at least one desulfurization discharge water rectification member that rectifies the desulfurization discharge water before being stirred by the discharge nozzle,
the desulfurization drainage rectification member is fixed by being sandwiched between the other end portion of the outer peripheral portion of the drainage nozzle opposite to the one end portion on the hull outer wall side and the convex portion of the outer wall side pipe.
According to the configuration of the above (8), the desulfurized waste water rectification member rectifies the desulfurized waste water before being stirred by the discharge nozzle, so that the efficiency of the discharge nozzle can be improved. The desulfurization drain water rectification member is fixed by being sandwiched between the other end portion of the outer peripheral portion of the drain nozzle and the convex portion of the outer wall side pipe only by being inserted into the outer wall side pipe before the drain nozzle. Therefore, the mounting work and the replacement work of the desulfurization drainage rectification member can be easily performed.
(9) In some embodiments, in the configurations (5) to (7) above,
the discharge nozzle fixing device further comprises at least one desulfurization discharge water rectification member for rectifying the desulfurization discharge water before being stirred by the discharge nozzle,
the desulfurization drain water rectification member is fixed by being sandwiched between the other end portion of the outer peripheral portion of the drain nozzle and the one end portion of the inner pipe.
According to the configuration of the above (9), the desulfurized waste water rectification member rectifies the desulfurized waste water before being stirred by the discharge nozzle, so that the efficiency of the discharge nozzle can be improved. When the outer wall side pipe and the inner pipe are fastened together, the desulfurization drainage rectification member is sandwiched and fixed between the drainage nozzle and the inner pipe, and between the other end of the outer peripheral portion of the drainage nozzle and one end of the inner pipe. Therefore, the mounting work and the replacement work of the desulfurization drainage rectification member can be easily performed.
(10) In some embodiments, in the structures (3), (4) and (8),
the drain nozzle fixing device further includes a rotation stopping mechanism having a rotation stopping member axially inserted into a hole or a groove provided at one end portion of the outer peripheral portion of the drain nozzle on the hull outer wall side.
According to the configuration of the above (10), the drain nozzle fixing device includes the rotation stopping mechanism having the rotation stopping member inserted in the axial direction in the hole or the groove provided at the one end portion on the hull outer wall side of the outer peripheral portion of the drain nozzle. Therefore, the water discharge nozzle is positioned in the circumferential direction while restricting the rotational movement about the shaft, and therefore, the desulfurization waste water is stirred and mixed with the seawater without rotating itself, and therefore, the desulfurization waste water can be stirred efficiently.
(11) In some embodiments, in the configurations (1) to (10) above,
the drain nozzle fixing device further includes at least one reinforcing member integrally fixed to the ship inner wall surface of the hull outer wall and integrally fixed to the outer side surface of the outer wall side pipe.
According to the structure of the above (11), the hull outer wall and the outer wall side pipe can be reinforced by the reinforcing member. Further, since the outer-wall pipe is reinforced by the reinforcing member, the wall thickness of the outer-wall pipe can be reduced by that amount, and the outer-wall pipe can be prevented from being heavy and expensive.
(12) In some embodiments, in the configurations (1) to (11) above,
the drain nozzle fixing device is provided with an acid-resistant coating film on the inner side surface of the outer wall side pipe.
According to the configuration of the above (12), since the discharge nozzle fixing device has the acid-resistant coating film applied to the inner surface of the outer-wall-side pipe, a material having low acid resistance can be used for the outer-wall-side pipe.
(13) In some embodiments, in the configurations (1) to (12) above,
the drain nozzle is formed of a material having a lower strength than the outer wall side pipe.
According to the configuration of the above (13), since the drain nozzle is formed of a material having a lower strength than the outer wall side pipe, a lightweight and inexpensive material can be used for the drain nozzle, and the drain nozzle can be reduced in weight and price.
(14) In some embodiments, in the configurations (1) to (13), the one end portion of the outer-wall-side pipe is integrally fixed to the opening edge portion of the hull outer wall by welding.
According to the structure of the above (14), since the one end portion of the outer-wall-side pipe is integrally fixed to the opening edge portion of the hull outer wall by welding, the outer-wall-side pipe and the hull outer wall can be firmly fixed.
Effects of the invention
According to at least one embodiment of the present invention, there is provided a drain nozzle fixing device capable of easily performing an attaching operation and a replacing operation of a drain nozzle.
Drawings
Fig. 1 is a schematic view schematically showing a drain nozzle fixing device according to an embodiment of the present invention and a ship equipped with the drain nozzle fixing device.
Fig. 2 is an enlarged schematic sectional view of a portion a shown in fig. 1.
Fig. 3 is a sectional view of the drain nozzle shown in fig. 2.
Fig. 4 is a front view of the drain nozzle shown in fig. 2.
Fig. 5 is a front view of the drain nozzle suppressing member shown in fig. 2.
Fig. 6 is a view showing a discharge nozzle fixing device according to another embodiment of the present invention, and is an enlarged schematic cross-sectional view of a portion a shown in fig. 1.
Fig. 7 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a desulfurization drain rectification member is provided between the other end portion of the outer peripheral portion of the drain nozzle and the convex portion of the outer wall side pipe.
Fig. 8 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a desulfurized drain water rectification member is provided between the other end portion of the outer peripheral portion of the drain nozzle and one end portion of the inner pipe.
Fig. 9 is a sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a key is inserted into a key groove provided in an outer peripheral portion and an outer wall side pipe of a drain nozzle.
Fig. 10 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which an outer peripheral portion of a drain nozzle and a drain nozzle suppressing member are fixed by bolts.
Fig. 11 is a front view of the drain nozzle shown in fig. 10.
Fig. 12 is a cross-sectional view showing a drainage nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a coating film is applied to an inner surface of an outer-wall-side pipe.
Fig. 13 is a cross-sectional view showing a drainage nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a coating film is applied to an inner surface and the other end surface of an outer wall side pipe.
Detailed Description
Hereinafter, several embodiments of the present invention will be described with reference to the drawings. The dimensions, materials, shapes, relative arrangements, and the like of the constituent members described as the embodiments and shown in the drawings are not intended to limit the scope of the present invention, and are merely illustrative examples.
For example, expressions indicating relative or absolute arrangements such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "central", "concentric", or "coaxial" indicate not only such arrangements as strict ones but also relative displacements with tolerances or angles and distances that can obtain the same degree of functionality.
For example, "the same", "equal", and "homogeneous" indicate that the same substance is in an equal state, and that the expression indicates not only a state of being exactly equal but also a state of being different in tolerance or degree of obtaining the same function.
For example, the expression indicating the shape such as a quadrangular shape or a cylindrical shape indicates not only a shape such as a quadrangular shape or a cylindrical shape in a geometrically strict sense but also a shape including a concave and convex portion, a chamfered portion, and the like in a range where the same effect can be obtained.
On the other hand, expressions such as "having", "equipped", "including", or "having" one constituent element are not exclusive expressions excluding the presence of other constituent elements.
In the following description, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.
Hereinafter, each structure of the drain nozzle fixing device 1 will be described.
Fig. 1 is a schematic view schematically showing a drain nozzle fixing device according to an embodiment of the present invention and a ship equipped with the drain nozzle fixing device. As shown in fig. 1, the ship 2 includes a hull 21, a desulfurization device 3 provided in the hull 21, a drain pipe 5 through which desulfurization wastewater Wd discharged from the desulfurization device 3 flows, a drain nozzle 4 disposed on an outlet side of the drain pipe 5, and a drain nozzle fixing device 1 for fixing the drain nozzle 4.
The hull 21 includes an outer hull wall 12 extending in the vertical direction in the drawing shown in fig. 1, a deck 21a provided on the upper end side of the outer hull wall 12, and a bottom, not shown, provided on the lower end side of the outer hull wall 12, and has an in-ship space 21b defined by the above. Further, the hull 21 is provided with a main internal combustion engine and a plurality of power generation internal combustion engines/boilers in the ship space 21 b.
As shown in fig. 1, the desulfurization device 3 is provided on a deck 21a of a hull 21. The desulfurization device 3 performs desulfurization treatment on the exhaust gas generated from the main internal combustion engine and the plurality of power generation internal combustion engines/boilers, and generates a desulfurization-treated exhaust gas in which sulfur oxides are reduced to a limiting value or less. The desulfurization unit 3 generates desulfurization waste water Wd during the desulfurization treatment. As shown in fig. 1, the desulfurization device 3 has a drain storage tank 3a for storing the desulfurization drain water Wd. The desulfurized wastewater Wd in the present invention includes not only wastewater subjected to a desulfurization treatment but also wastewater subjected to another treatment after the desulfurization treatment, such as wastewater subjected to a desulfurization treatment and subjected to another treatment after the desulfurization treatment, such as wastewater added with a pH adjuster.
The drain pipe 5 is provided in the ship interior space 21b of the hull 21, and is formed in a cylindrical shape extending in the vertical direction in fig. 1 in the axial direction. The upper end of the drain pipe 5 is configured to protrude outward beyond the deck 21a of the hull 21 so that the desulfurized drain water Wd that overflows from the drain storage tank 3a of the desulfurization device 3 flows into the pipe. The lower end of the drain pipe 5 is bent at a substantially right angle along the middle of its length such that the distal end extends in the horizontal direction (rightward in fig. 1). The distal end of the drain pipe 5 is connected to the drain nozzle fixing device 1.
Fig. 2 is an enlarged schematic sectional view of a portion a shown in fig. 1. Fig. 3 is a sectional view of the drain nozzle shown in fig. 2. Fig. 4 is a front view of the drain nozzle shown in fig. 2. Fig. 6 is a view showing a discharge nozzle fixing device according to another embodiment of the present invention, and is an enlarged schematic cross-sectional view of a portion a shown in fig. 1.
The drainage nozzle 4 agitates the desulfurization drainage Wd discharged from the desulfurization device 3 provided in the hull 21 to promote mixing with the seawater Ws around the hull 21. The drain nozzle 4 includes a cylindrical outer peripheral portion 41 shown in fig. 2 and 6, and a nozzle portion 42 provided inside the outer peripheral portion 41. More specifically, the drain nozzle 4 includes an outer peripheral portion 41 formed in a cylindrical shape as shown in fig. 3 and 4, a nozzle portion 42 having at least one vane 42a provided inside the outer peripheral portion 41, and a shaft portion 43 provided inside the nozzle portion 42. The drain nozzle 4 is arranged such that its axis is aligned linearly with respect to the axis 1a of the drain nozzle fixing device 1.
The drain nozzle fixing device 1 includes an outer wall side pipe 11 and a hull outer wall 12 shown in fig. 2 and 6.
The hull outer wall 12 forms a part of the hull 21, and a circular opening 12a penetrating in the thickness direction is formed at a position below the waterline Lw shown in fig. 1, 2, and 6. The opening 12a of the hull outer wall 12 is formed in a straight line having the same axis with respect to the axis 1a of the discharge nozzle fixing device 1.
As shown in fig. 2 and 6, the outer wall side pipe 11 is arranged so that its axis is aligned with the axis 1a of the discharge nozzle fixing device 1. As shown in fig. 2 and 6, the outer-wall-side pipe 11 is formed in a cylindrical shape having an internal space 11a over the entire axial direction and having openings at both axial end portions. More specifically, the outer-wall-side pipe 11 has a first-end-side opening 11f formed at a first end 11b located on the hull outer wall 12 side in the axial direction, and a second-end-side opening 11g formed at a second end 11c located on the side separated from the hull outer wall 12 in the axial direction and located further inward than the inner side surface 12c of the hull outer wall 12.
The one end 11b of the outer-wall-side pipe 11 is integrally fixed to the edge of the opening 12a of the hull outer wall 12, and the one end-side opening 11f is connected to the outside of the hull outer wall 12, that is, to the outside of the outer surface 12b of the hull outer wall 12.
More specifically, in some embodiments, in a state where the end surface of the outer wall pipe 11 on the one end 11b side is in contact with the inner surface 12c of the hull outer wall 12 as shown in fig. 2, a portion of the outer surface 11d of the outer wall pipe 11 on the one end 11b side and a portion of the inner surface 12c of the hull outer wall 12 adjacent to the contact portion are welded to each other and thereby integrally fixed.
The inner surface 11e of the outer-wall-side pipe 11 including the one-end-side opening 11f has substantially the same diameter as the opening 12a of the hull outer wall 12, and the one-end-side opening 11f continues to the opening 12a of the hull outer wall 12 without any step. Further, the one-end-side opening 11f of the outer-wall-side pipe 11 is connected to the outer side of the outer surface 12b of the hull outer wall 12 through the opening 12a of the hull outer wall 12.
Fig. 7 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a desulfurization drain rectification member is provided between the other end portion of the outer peripheral portion of the drain nozzle and the convex portion of the outer wall side pipe. Fig. 12 is a cross-sectional view showing a drainage nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a coating film is applied to an inner surface of an outer-wall-side pipe.
As shown in fig. 2, 7, and 12, the drain nozzle 4 is provided inside the outer wall pipe 11, and the outer peripheral surface 41a of the outer peripheral portion 41 is disposed without a gap between the inner surface 11e of the outer wall pipe 11 and the peripheral surface of the opening 12a of the hull outer wall 12. More specifically, in some embodiments, as shown in fig. 2 and 7, the drain nozzle 4 is disposed without a gap between the inner surface 11e of the outer-wall-side pipe 11 and the peripheral surface of the opening 12a of the hull outer wall 12 by the outer peripheral surface 41a of the outer peripheral portion 41 directly contacting the inner surface 11e of the outer-wall-side pipe 11 and the peripheral surface of the opening 12a of the hull outer wall 12. In some other embodiments, as shown in fig. 12, a covering member 18 is provided that directly contacts the inner surface 11e of the outer-wall-side pipe 11 and the circumferential surface of the opening 12a of the hull outer wall 12. The drainage nozzle 4 is disposed on the inner surface 11e of the outer wall side pipe 11 and the peripheral surface of the opening 12a of the hull outer wall 12 with the covering member 18 interposed therebetween without a gap, by the outer peripheral surface 41a of the outer peripheral portion 41 being in contact with the covering member 18.
In other embodiments, the outer surface 11d including the one end 11b of the outer-wall-side pipe 11 has substantially the same diameter as the opening 12a so that the one end 11b shown in fig. 6 can be inserted into the opening 12a of the hull outer wall 12. The outer-wall-side pipe 11 is integrally fixed to the hull outer wall 12 by inserting the one end 11b into the opening 12a of the hull outer wall 12 from the inner side surface 12c side of the hull outer wall 12, and welding the adjacent portions of the outer side surface 11d and the inner side surface 12c of the hull outer wall 12 to each other with the end surface of the one end 11b side flush with the outer side surface 12b of the hull outer wall 12. Further, the one-end-side opening 11f of the outer-wall-side pipe 11 is directly connected to the outer side surface 12b of the hull outer wall 12 without interposing another member therebetween.
Fig. 8 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a desulfurized drain water rectification member is provided between the other end portion of the outer peripheral portion of the drain nozzle and one end portion of the inner pipe. Fig. 13 is a cross-sectional view showing a drainage nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a coating film is applied to an inner surface and the other end surface of an outer wall side pipe.
As shown in fig. 6, 8, and 13, the drainage nozzle 4 is provided inside the outer wall pipe 11, and the outer peripheral surface 41a of the outer peripheral portion 41 is disposed without a gap with respect to the peripheral surface of the inner surface 11e of the outer wall pipe 11. More specifically, in some embodiments, as shown in fig. 6 and 8, the drain nozzle 4 is disposed without a gap to the inner surface 11e of the outer-wall-side pipe 11 by the outer surface 41a of the outer peripheral portion 41 directly contacting the inner surface 11e of the outer-wall-side pipe 11. In some other embodiments, as shown in fig. 13, a covering member 18 is provided to be in direct contact with the inner surface 11e of the outer-wall-side pipe 11. The drain nozzle 4 is disposed with no gap with respect to the inner surface 11e of the outer wall side pipe 11 with the covering member 18 interposed therebetween by the outer peripheral surface 41a of the outer peripheral portion 41 contacting the covering member 18.
In some other embodiments, the discharge nozzle fixing device 1 further includes an inner pipe 14 as shown in fig. 2 and 6. The inner pipe 14 constitutes a part of the drain pipe 5. The inner pipe 14 includes a 1 st inner pipe 141 connected to the outer wall side pipe 11 and a 2 nd inner pipe 142 connected to the 1 st inner pipe 141. As shown in fig. 6, the 1 st inner pipe 141 is formed in a tubular shape, and includes a flange portion 141d protruding outward from the outer peripheral surface of one end portion 141a on the outer wall side pipe 11 side in the axial direction, and a flange portion 141e protruding outward from the outer peripheral surface of the other end portion 141b on the side away from the outer wall side pipe 11 in the axial direction. As shown in fig. 6, the 2 nd inner pipe 142 is formed in a tubular shape, and a flange portion 142c protruding outward from the outer peripheral surface of at least one end portion 142a of the 1 st inner pipe 141 among both end portions in the axial direction is formed. The 1 st inner pipe 141 and the 2 nd inner pipe 142 are configured such that inner circumferential surfaces 141c and 142b have substantially the same diameter as the inner circumferential surface 41b of the outer circumferential portion 41 of the drain nozzle 4 and are continuous with the inner circumferential surface 41b without any step. The 1 st inner pipe 141 and the 2 nd inner pipe 142 are arranged linearly with the same axis with respect to the axis 1a of the discharge nozzle fixing device 1.
In some other embodiments, as shown in fig. 7 and 8, the drain nozzle fixing device 1 further includes a desulfurized drain water rectification member 15. The desulfurization waste water rectification member 15 is for rectifying the desulfurization waste water Wd before being stirred by the discharge nozzle 4, and is formed in a circular shape having an outer peripheral surface 15a and a plate shape having one end surface 15b and the other end surface 15 c. Further, the desulfurization drainage rectification member 15 is formed with a plurality of circular through holes 15d penetrating in the plate thickness direction throughout the entire surface except for the outer peripheral edge portion of the one end surface 15 b. The desulfurized drain water Wd is rectified by passing through the through holes 15d of the desulfurized drain water rectifying member 15. The desulfurization drain water rectification member 15 is disposed so that its axis is aligned with the axis 1a of the drain nozzle fixing device 1.
In some embodiments, the discharge nozzle fixing device 1 includes the hull outer wall 12 and the outer wall side pipe 11 shown in fig. 2 and 6. The drain nozzle 4 is provided inside the outer wall side pipe 11.
According to the above configuration, the outer-wall-side pipe 11 is formed in a tubular shape having the internal space 11a over the entire axial direction and having the openings (the one-end-side opening 11f and the other-end-side opening 11g) communicating with the internal space 11a at both ends (the one end 11b and the other end 11c) in the axial direction. The one end 11b of the outer-wall-side pipe 11 is integrally fixed to an edge of an opening 12a formed below the waterline Lw of the hull outer wall 12. The other end 11c of the outer-wall-side pipe 11 is disposed inside the hull outer wall 12. Therefore, the outer wall side pipe 11 can provide the drain nozzle 4 inserted from either of the openings at both ends in the axial direction inside the internal space 11 a.
The discharge nozzle 4 provided inside the outer wall side pipe 11 can agitate and mix the desulfurized wastewater Wd flowing in from the other end side opening 11g with the seawater Ws. Further, unlike the conventional drain nozzle described above, the drain nozzle 4 is not integrally joined to the hull outer wall 12 and the pipes (the outer wall side pipe 11 and the inner side pipe 14) by welding, and therefore, the mounting operation and the replacement operation can be easily performed.
Unlike the conventional drain nozzle described above, the drain nozzle 4 attached to the drain nozzle fixing device 1 is not integrally fixed to the hull outer wall 12, and does not need to have the strength as in the conventional drain nozzle. Therefore, the drain nozzle 4 can improve the degree of freedom in selecting and replacing materials more frequently than conventional drain nozzles. For example, Fiber Reinforced Plastic (FRP) or a polymer material can be used as the material of the drain nozzle 4, and thus the drain nozzle can be made less expensive and lighter. Further, since the material is not a strength member unlike the conventional drain nozzle described above, it is possible to cope with deterioration and wear of the drain nozzle 4 by regular nozzle replacement, and thus it is possible to select the material of the drain nozzle 4 in consideration of this point.
In other embodiments, the drain nozzle 4 is formed of a material having lower strength than the outer wall side pipe 11. Here, as the material of the outer-wall-side pipe 11, for example, rolled steel material (SS material) for general structure, stainless steel (SUS material), and the like can be given. Examples of the material of the drain nozzle 4 include Fiber Reinforced Plastic (FRP), polymer materials, and the like. In this case, a lightweight and inexpensive material can be used for the drain nozzle 4, and the drain nozzle 4 can be reduced in weight and price.
In other embodiments, the outer-wall-side pipe 11 is integrally fixed to the edge of the opening 12a of the hull outer wall 12 by welding at one end 11 b. In this case, the outer wall side pipe 11 and the hull outer wall 12 can be firmly fixed.
In other embodiments, the drain nozzle 4 includes the outer peripheral portion 41 and the nozzle portion 42. Further, the outer peripheral surface 41a of the outer peripheral portion 41 of the drain nozzle 4 is disposed without a gap to the inner surface 11e of the outer-wall-side pipe 11.
According to the above configuration, since the outer peripheral surface 41a of the outer peripheral portion 41 is disposed without a gap between the inner surfaces 11e of the outer-wall-side pipes 11, the water discharge nozzle 4 can be positioned in the direction perpendicular to the axial direction with respect to the outer-wall-side pipes 11 by merely inserting the water discharge nozzle into the outer-wall-side pipes 11 during the mounting operation and the replacement operation. Therefore, the mounting work and the replacement work of the drain nozzle 4 can be efficiently performed. Further, since the outer peripheral surface 41a is disposed without a gap with respect to the inner surface 11e of the outer wall side pipe 11, the discharge nozzle 4 can prevent a part of the desulfurized waste water Wd from flowing into a gap formed between the outer peripheral surface 41a of the outer peripheral portion 41 and the inner surface 11e of the outer wall side pipe 11 and staying, and the staying part of the desulfurized waste water Wd blocks smooth flow of the other desulfurized waste water Wd.
In some other embodiments, the discharge nozzle fixing device 1 further includes a discharge nozzle suppressing member 13 shown in fig. 2, which is detachably attached to the vicinity of the opening 12a of the hull outer wall 12 and prevents the discharge nozzle 4 from being detached from the one-end-side opening 11f of the outer-wall-side pipe 11 to the outside of the outer-wall-side pipe 11.
Fig. 5 is a front view of the drain nozzle suppressing member shown in fig. 2.
The drainage nozzle suppressing member 13 is formed in a ring shape having an outer peripheral surface 13a and an inner peripheral surface 13b, and has a plate shape having an outer side surface 13c and an inner side surface 13d, as shown in fig. 2, 5, and 11. As shown in fig. 5 and 11, the drainage nozzle suppressing member 13 has a plurality of through holes 13e penetrating in the thickness direction at positions close to the outer peripheral surface 13 a. The plurality of through holes 13e are arranged at equal intervals from each other so that the axial center is located on a circle having a predetermined diameter dimension. In some embodiments, as shown in fig. 11, the drain nozzle suppressing member 13 has a plurality of through holes 13f penetrating in the thickness direction at positions close to the inner surface 13 d. The plurality of through holes 13f are arranged at equal intervals so that the axis is positioned on a circle having a diameter smaller than the axis of the through hole 13 e. The drain nozzle suppressing member 13 is disposed so that its axis is the same straight line as the axis 1a of the drain nozzle fixing device 1.
As shown in fig. 2, the hull outer wall 12 is recessed from the outer side surface 12b toward the inner side surface 11e, and an annular recessed portion 12d having a depth dimension substantially equal to the plate thickness dimension of the drainage nozzle suppressing member 13 is formed. The annular recess 12d has the same axis as that of the opening 12a, and has a diameter dimension larger than that of the opening 12 a. The annular recess 12d has a diameter substantially equal to the outer diameter of the drain nozzle suppressing member 13.
As shown in fig. 2, the drain nozzle suppressing member 13 is detachably fixed to the hull outer wall 12 by screwing the male screw member 6 inserted through the through hole 13e into the female screw portion 12g formed on the bottom surface 12e of the annular recess 12d in a state inserted into the annular recess 12d from the outer side surface 12b side of the hull outer wall 12. The inner side surface 13d of the drainage nozzle suppressing member 13 is in contact with the bottom surface 12e of the annular recess 12d, and the outer side surface 13c is substantially flush with the outer side surface 12b of the hull outer wall 12. The inner circumferential surface 13b of the drain nozzle suppressing member 13 has substantially the same diameter as the inner circumferential surface 41b of the outer circumferential portion 41 of the drain nozzle 4.
According to the above configuration, since the drain nozzle suppressing member 13 is detachably provided in the vicinity of the opening 12a of the hull outer wall 12, the drain nozzle 4 can be easily attached and replaced from the one-end-side opening 11f of the outer-wall-side pipe 11 by detaching the drain nozzle suppressing member 13. Further, since the one end surface 41c of the outer peripheral portion 41 of the drain nozzle 4 is locked to the inner surface 13d of the drain nozzle suppressing member 13 by attaching the drain nozzle suppressing member 13, the drain nozzle 4 can be prevented from being detached from the one end side opening 11f of the outer-wall-side pipe 11 to the outside of the outer-wall-side pipe 11.
In the above-described embodiment, the annular recessed portion 12d or the female screw portion 12g is formed in the hull outer wall 12, but an annular recessed portion or a female screw portion may be formed in the outer wall side pipe 11. In this case, the drain nozzle suppressing member 13 is inserted into an annular recess formed in the outer wall side pipe 11 and fixed to the outer wall side pipe 11. Further, an annular recess may not be formed in the outer wall side pipe 11 or the hull outer wall 12. In this case, the drainage nozzle suppressing member 13 is fixed to the outer wall side pipe 11 and the hull outer wall 12 in a state where the inner side surface 13d is in contact with the end surface on the one end portion 11b side of the outer wall side pipe 11 and the outer side surface 12b of the hull outer wall 12.
In some other embodiments, the discharge nozzle fixing device 1 includes the above-described outer wall side pipe 11, the above-described hull outer wall 12, and the above-described discharge nozzle suppressing member 13. The outer-wall-side pipe 11 is formed with a protrusion 11h protruding inward from the inner surface 11e of the other end 11c as shown in fig. 2, 7, and 12. The drain nozzle 4 is provided inside the outer-wall-side pipe 11 in a state where one end surface 41c of the outer peripheral portion 41 abuts against the drain nozzle suppressing member 13 and the other end surface 41d of the outer peripheral portion 41 abuts against or approaches the projection 11 h.
More specifically, in some embodiments, as shown in fig. 2 and 7, when the water discharge nozzle 4 is inserted from the one-end-side opening 11f of the outer-wall-side pipe 11, the other end surface 41d of the outer peripheral portion 41 abuts against the step surface 11k formed between the inner surfaces 11e of the convex portions 11h of the outer-wall-side pipe 11. The length dimension in the axial direction of the outer peripheral portion 41 of the drain nozzle 4 is formed to be substantially the same as the sum of the length dimension in the axial direction of the outer wall side pipe 11 excluding the convex portion 11h and the thickness dimension of the annular concave portion 12d of the hull outer wall 12. Therefore, when the drain nozzle 4 is disposed in the internal space 11a of the outer-wall-side pipe 11 and the inside of the opening 12a of the hull outer wall 12, the one end surface 41c is substantially flush with the bottom surface 12e of the annular recess 12d of the hull outer wall 12. When the drain nozzle suppressing member 13 is attached to the hull outer wall 12, the one end surface 41c of the outer peripheral portion 41 abuts against the inner surface 13d of the drain nozzle suppressing member 13.
In other embodiments, a later-described covering member 18 shown in fig. 12 is bonded to the stepped surface 11k of the outer-wall-side pipe 11. Therefore, the other end surface 41d of the outer peripheral portion 41 of the drain nozzle 4 is close to the step surface 11k of the outer wall side pipe 11. The other end surface 41d of the outer peripheral portion 41 of the drain nozzle 4 abuts on the covering member 18 provided on the step surface 11k of the outer wall side pipe 11. The length dimension in the axial direction of the outer peripheral portion 41 of the drain nozzle 4 is set to be shorter than the sum of the length dimension in the axial direction of the outer wall side pipe 11 not including the convex portion 11h and the thickness dimension of the annular concave portion 12d of the hull outer wall 12 by the thickness dimension of the covering member 18. Therefore, when the drain nozzle 4 is disposed in the internal space 11a of the outer-wall-side pipe 11 and the inside of the opening 12a of the hull outer wall 12, the one end surface 41c is substantially flush with the bottom surface 12e of the annular recess 12d of the hull outer wall 12. When the drain nozzle suppressing member 13 is attached to the hull outer wall 12, the one end surface 41c of the outer peripheral portion 41 abuts against the inner surface 13d of the drain nozzle suppressing member 13.
According to the above configuration, since the drain nozzle 4 is provided inside the outer wall side pipe 11 in a state where the one end surface 41c of the outer peripheral portion 41 abuts against the drain nozzle suppressing member 13 and the other end surface 41d of the outer peripheral portion 41 abuts against or approaches the convex portion 11h of the outer wall side pipe 11, the operator can perform positioning in the axial direction of the drain nozzle 4 only by inserting the drain nozzle 4 into the inside of the outer wall side pipe 11 from the one end side opening 11f of the outer wall side pipe 11 and attaching the drain nozzle suppressing member 13, and therefore, the attaching operation and the replacing operation of the drain nozzle 4 can be easily performed.
In the above-described embodiments, the discharge nozzle fixing device 1 further includes the 1 st inner pipe 141 (inner pipe 14) connected to the other end portion 11c of the outer wall side pipe 11 shown in fig. 2. The outer-wall pipe 11 is formed with a flange portion 11i projecting outward from the outer surface 11d of the other end portion 11 c. Further, the outer-wall-side pipe 11 is fixed to the 1 st inner pipe 141 by fastening the flange portions 11i, 141d to each other in a state where the end surface of the flange portion 11i is in contact with the end surface of the flange portion 141d of the 1 st inner pipe 141. Here, the outer wall side pipe 11 and the 1 st inner side pipe 141 are fastened to each other by screwing the male screw member 7 and the nut member 8 inserted through the through holes 11j, 141f formed in the flange portions 11i, 141 d.
In other embodiments, the discharge nozzle fixing device 1 includes: the outer wall side pipe 11 having the convex portion 11h, the hull outer wall 12, the drain nozzle suppressing member 13, and the at least one desulfurized drain water rectification member 15 are provided with the drain nozzle 4 inside the outer wall side pipe 11. As shown in fig. 7, the desulfurized drain water rectification member 15 is sandwiched and fixed between the other end portion 41f of the outer peripheral portion 41 of the drain nozzle 4 on the hull outer wall 12 side and on the opposite side of the one end portion 41e, and the convex portion 11h of the outer wall side pipe 11.
As shown in fig. 7, the desulfurized drain water rectification member 15 has an outer peripheral surface 15a having a diameter substantially equal to the diameter of the outer peripheral surface 41a of the outer peripheral portion 41 of the drain nozzle 4 so as to be inserted into the inside of the inner surface 11e of the outer wall pipe 11. One end surface 15b of the desulfurized drain water rectification member 15 is in contact with the other end surface 41d of the outer peripheral portion 41 of the drain nozzle 4, and the other end surface 15c is in contact with the step surface 11k of the convex portion 11h of the outer wall side pipe 11.
According to the above configuration, the desulfurized drain water rectification member 15 rectifies the desulfurized drain water Wd before being stirred by the drain nozzle 4, and therefore, the efficiency of the drain nozzle 4 can be improved. The desulfurization/drainage rectification member 15 is inserted into the outer wall side pipe 11 just before the drainage nozzle 4, and is sandwiched and fixed between the other end portion 41f of the outer peripheral portion 41 of the drainage nozzle 4 and the convex portion 11h of the outer wall side pipe 11. Therefore, the operation of attaching and replacing the desulfurization drainage rectification member 15 can be easily performed.
Fig. 9 is a sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which a key is inserted into a key groove provided in an outer peripheral portion and an outer wall side pipe of a drain nozzle. Fig. 10 is a cross-sectional view showing a drain nozzle fixing device according to another embodiment of the present invention, and is a view showing a state in which an outer peripheral portion of a drain nozzle and a drain nozzle suppressing member are fixed by bolts. Fig. 11 is a front view of the drain nozzle shown in fig. 10.
In some other embodiments, the discharge nozzle fixing device 1 includes the above-described outer wall side pipe 11, the above-described hull outer wall 12, and the above-described discharge nozzle suppressing member 13, and the discharge nozzle 4 is provided inside the outer wall side pipe 11. The drain nozzle fixing device 1 further includes a rotation stopping mechanism 16 shown in fig. 9 to 11, which has a rotation stopping member 160 (a key 161, a male screw member 162) inserted in the axial direction into a hole (a female screw portion 41j) or a groove (a key groove 41i) provided at the one end portion 41e of the outer peripheral portion 41 of the drain nozzle 4 on the hull outer wall 12 side.
First, the detent mechanism 16 having the key 161 will be described.
The drainage nozzle 4 is formed with a key groove 41i extending in the axial direction from one end surface 41c on the outer peripheral surface 41a of the outer peripheral portion 41 shown in fig. 9. The outer-wall-side pipe 11 is formed with a key groove 11m extending in the axial direction from the end surface of the one end portion 11b on the inner surface 11e as shown in fig. 9. The hull outer wall 12 is formed with a key groove 12f extending from the outer side surface 12b to the inner side surface 12c in the axial direction on the inner peripheral surface of the opening 12 a. The key groove 41i of the drain nozzle 4, the key groove 11m of the outer wall pipe 11, and the key groove 12f of the hull outer wall 12 are formed so that the shapes of the cross sections perpendicular to the axis 1a of the drain nozzle fixing device 1
Figure BDA0002160078420000181
Character shape. The depth dimensions of both the key groove 11m of the outer-wall-side pipe 11 and the key groove 12f of the hull outer wall 12 are formed substantially the same. Therefore, when the key groove 41i of the drain nozzle 4 is disposed to face the key groove 11m of the outer wall side pipe 11 and the key groove 12f of the hull outer wall 12, the rectangular parallelepiped internal space 16a is defined.
The key 161 is formed in a rectangular parallelepiped shape and has a thickness dimension larger than the depth dimension of each of the key groove 41i of the drain nozzle 4 and the key groove 11m of the outer wall side pipe 11. The thickness of the key 161 is substantially the same as the sum of the depth of the key groove 41i and the depth of the key groove 11m, or is smaller than the sum of the depth of the key groove 41i and the depth of the key groove 11 m. The key 161 is inserted into the internal space 16a from the side of the one end portion 41e of the outer peripheral portion 41 of the drain nozzle 4 along the axial direction of the key groove 41 i. Even if the water discharge nozzle 4 is rotated about the shaft, the key 161 is locked to the side surface of the key groove 41i, and therefore the rotation about the shaft is restricted.
Next, the detent mechanism 16 having the male screw member 162 will be described.
As shown in fig. 10, the drain nozzle 4 is fixed to the drain nozzle suppressing member 13 by bolt fixing of the male screw member 162 (bolt). More specifically, the discharge nozzle 4 has a female screw portion 41j formed in the axial direction from one end surface 41c of the outer peripheral portion 41. As shown in fig. 10, the drain nozzle suppressing member 13 is detachably fixed to the drain nozzle 4 by inserting the male screw member 162 inserted through the through hole 13f into the female screw portion 41j in the axial direction from the one end portion 41e side of the outer peripheral portion 41 of the drain nozzle 4 in a state inserted into the annular recess 12d from the outer side surface 12b side of the hull outer wall 12. Further, since the drain nozzle suppressing member 13 is detachably fixed to the hull outer wall 12 as described above, even if the drain nozzle 4 is to perform a rotational motion about an axis, the rotational motion about the axis is restricted because the drain nozzle suppressing member 13 is fixed thereto.
According to the above configuration, the drain nozzle fixing device 1 includes the rotation stopping mechanism 16 having the rotation stopping member 160 inserted in the axial direction in the hole (female screw portion 41j) or the groove (key groove 41i) provided in the one end portion 41e of the outer peripheral portion 41 of the drain nozzle 4 on the hull outer wall 12 side. Therefore, the water discharge nozzles 4 are restricted from rotational movement about the shaft, and are positioned in the circumferential direction of the water discharge nozzles 4, and the desulfurized wastewater Wd is stirred and mixed with the seawater Ws without rotating itself, so that the desulfurized wastewater Wd can be stirred efficiently.
In some other embodiments, the discharge nozzle fixing device 1 includes the above-described outer wall side pipe 11 and the above-described hull outer wall 12. The discharge nozzle fixing device 1 further includes the 1 st inner pipe 141 (inner pipe 14) connected to the other end portion 11c of the outer wall side pipe 11 shown in fig. 6.
The drain nozzle 4 is formed with a flange portion 41g (1 st flange portion) protruding outward from the outer peripheral surface 41a in the other end portion 41f of the outer peripheral portion 41 as shown in fig. 6. The drain nozzle 4 is detachably fixed to the outer wall side pipe 11 by fastening the outer wall side pipe 11 and the 1 st inner pipe 141 with the flange portion 41g interposed between the other end portion 11c of the outer wall side pipe 11 and the one end portion 141a of the 1 st inner pipe 141 on the hull outer wall 12 side.
According to the above configuration, since the positioning in the axial direction of the drain nozzle 4 can be performed only by fixing the flange portion 41g of the drain nozzle 4 to the outer wall side pipe 11, the mounting operation and the replacement operation of the drain nozzle 4 can be easily performed. Further, since the rotational movement of the drain nozzle 4 about the axis is restricted only by fixing the flange portion 41g of the drain nozzle 4 to the outer wall side pipe 11, the positioning of the drain nozzle 4 in the circumferential direction can be performed, and the drain nozzle 4 itself does not rotate when the desulfurized drain water Wd is stirred and mixed with the seawater, so that the desulfurized drain water Wd can be stirred efficiently. Further, the drain nozzle 4 can be easily removed from the outer wall side pipe 11 by releasing the fastening of the outer wall side pipe 11 and the inner side pipe 14. Further, since the drain nozzle fixing device 1 does not need to include the drain nozzle suppressing member 13, the number of components can be reduced.
In some other embodiments, the drain nozzle fixing device 1 includes the outer wall side pipe 11 having the flange portion 11i (2 nd flange portion) described above, the hull outer wall 12 described above, and the 1 st inner pipe 141 having the flange portion 141d (3 rd flange portion) described above, as shown in fig. 6, and the drain nozzle 4 having the flange portion 41g (1 st flange portion) is provided inside the outer wall side pipe 11. The drain nozzle 4 is detachably fixed to the outer-wall-side pipe 11 by fastening the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 in a state where the flange portion 41g is sandwiched between the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141. Here, the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 are fastened by screwing the male screw member 7 and the nut member 8, which are inserted through the through holes 11j, 41h, 141f formed in the respective flange portions 11i, 141d and the flange portion 41g of the drain nozzle 4.
According to the above configuration, the drain nozzle 4 is detachably fixed to the outer-wall-side pipe 11 by fastening the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 in a state where the flange portion 41g is sandwiched between the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141. Therefore, the flange portion 41g of the drain nozzle 4 is fixed in a state of surface contact with the flange portion 11i of the outer wall side pipe 11 and the flange portion 141d of the 1 st inner pipe 141, and therefore the drain nozzle 4 can be stably fixed to the outer wall side pipe 11.
In some other embodiments, the drain nozzle fixing device 1 includes the above-described outer-wall-side pipe 11, the above-described hull outer wall 12, the 1 st inner pipe 141 having the above-described flange portion 141e, and the 2 nd inner pipe 142 having the above-described flange portion 142c, as shown in fig. 6, and has a flange portion 41g inside the outer-wall-side pipe 11, and a drain nozzle 4 detachably fixed to the outer-wall-side pipe 11 by fastening the outer-wall-side pipe 11 and the 1 st inner pipe 141 is provided. The 1 st inner pipe 141 is formed to have a longer length in the axial direction than the drain nozzle 4.
The 1 st inner pipe 141 is detachably fixed to the 2 nd inner pipe 142 by fastening the flange portions 141e and 142c to each other in a state where an end surface of the flange portion 141e is in contact with an end surface of the flange portion 142c of the 2 nd inner pipe 142. Here, the 1 st inner pipe 141 and the 2 nd inner pipe 142 fasten the flange portions 141e and 142c to each other by screwing the male screw member 7 and the nut member 8, which are inserted through the through holes 141g and 142d formed in the flange portions 141e and 142 c.
According to the above configuration, since the length dimension in the axial direction of the 1 st inner pipe 141 is formed to be longer than the drain nozzle 4, the drain nozzle 4 can be removed from the outer wall side pipe 11 only by removing the 1 st inner pipe 141 from the outer wall side pipe 11 or the 2 nd inner pipe 142. Therefore, the mounting work and the replacement work of the drain nozzle 4 can be easily performed.
In the above configuration, when the 1 st inner pipe 141 is formed to have a shorter axial length than the 2 nd inner pipe 142, the 1 st inner pipe 141 can be easily removed from the outer wall side pipe 11 or the 2 nd inner pipe 142.
In some other embodiments, the discharge nozzle fixing device 1 includes the above-described outer wall side pipe 11, the above-described hull outer wall 12, the above-described desulfurized discharge water rectification member 15, and the above-described 1 st inner pipe 141 shown in fig. 8, and the discharge nozzle 4 is provided inside the outer wall side pipe 11. As shown in fig. 8, the desulfurized drain water rectification member 15 is fixed by being sandwiched between the other end portion 41f of the outer peripheral portion 41 of the drain nozzle 4 and the one end portion 141a of the 1 st inner pipe 141.
As shown in fig. 8, the diameter of the outer peripheral surface 15a of the desulfurization drainage rectification member 15 is formed to be substantially the same as the diameter of the outer peripheral surface of the flange portion 11i of the outer wall side pipe 11, the diameter of the outer peripheral surface of the flange portion 41g of the outer peripheral portion 41 of the drainage nozzle 4, and the diameter of the outer peripheral surface of the flange portion 141d of the 1 st inner pipe 141. Further, one end surface 15b of the desulfurization drainage rectification member 15 is in contact with the end surface of the flange portion 41g described above, and the other end surface 15c is in contact with the end surface of the flange portion 141d of the 1 st inner pipe 141.
The desulfurization/drainage rectification member 15 is detachably fixed to the outer-wall-side pipe 11 by fastening the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 in a state of being sandwiched between the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 together with the flange portion 41g of the drainage nozzle 4. Here, the flange portion 11i of the outer-wall-side pipe 11 and the flange portion 141d of the 1 st inner pipe 141 are fastened by screwing the male screw member 7 and the nut member 8, which are inserted through the respective flange portions 11i and 141d, the flange portion 41g of the drain nozzle 4, and the through holes 11j, 41h, 15e, and 141f of the desulfurization drain rectification member 15.
According to the above configuration, the desulfurized drain water rectification member 15 rectifies the desulfurized drain water Wd before being stirred by the drain nozzle 4, and therefore, the efficiency of the drain nozzle 4 can be improved. The desulfurization drain water rectification member 15 is sandwiched between the drain nozzle 4 and the 1 st inner pipe 141 only when the outer wall side pipe 11 and the 1 st inner pipe 141 are fastened together, and is sandwiched and fixed between the other end portion 41f of the outer peripheral portion 41 of the drain nozzle 4 and the one end portion 141a of the 1 st inner pipe 141. Therefore, the operation of attaching and replacing the desulfurization drainage rectification member 15 can be easily performed.
The desulfurized drain water rectification member 15 described above is formed with a plurality of circular through holes 15d, but the opening diameters may be different from each other. The through hole 15d is not limited to a circular shape, and may be formed in a long hole shape, a polygonal shape, or the like. Further, the drain nozzle fixing device 1 may be configured to include a plurality of the desulfurization drain water rectification members 15.
In some other embodiments, the drain nozzle fixing device 1 includes the outer wall side pipe 11 and the hull outer wall 12, and the drain nozzle 4 is provided inside the outer wall side pipe 11. The drain nozzle fixing device 1 further includes at least one reinforcing member 17 shown in fig. 12 and 13, which is integrally fixed to the inner surface 12c (inner wall surface) of the hull outer wall 12 and to the outer surface 11d of the outer wall pipe 11.
As shown in fig. 12 and 13, the reinforcing member 17 is formed in a triangular column shape, and includes: a surface 17a which abuts against the outer surface 11d of the outer-wall-side pipe 11; and another surface 17b adjacent to the one surface 17a, perpendicular to the one surface 17a, and abutting against the inner surface 12c of the hull outer wall 12. The reinforcing member 17 is integrally fixed to the outer surface 11d of the outer-wall-side pipe 11 by welding and joining portions adjacent to both abutting portions in a state where the one surface 17a abuts against the outer surface 11d of the outer-wall-side pipe 11. The reinforcing member 17 is integrally fixed to the inner surface 12c of the hull outer wall 12 by welding and joining portions adjacent to the abutting portions of the other surface 17b and the inner surface 12c of the hull outer wall 12 in a state in which the abutting portions are abutted against each other.
According to the above configuration, the hull outer wall 12 and the outer wall side pipe 11 can be reinforced by the reinforcing member 17. Further, since the outer-wall pipe 11 is reinforced by the reinforcing member 17, the thickness of the outer-wall pipe 11 can be reduced by a corresponding amount, and the outer-wall pipe 11 can be prevented from being heavy and expensive.
In the above-described embodiment, the reinforcing member 17 is formed in a triangular columnar shape, but may be formed in other shapes such as a triangular pyramid shape.
In some other embodiments, the drain nozzle fixing device 1 includes the outer wall side pipe 11 and the hull outer wall 12, and the drain nozzle 4 is provided inside the outer wall side pipe 11. As shown in fig. 12 and 13, the drainage nozzle fixing device 1 has an acid-resistant coating film applied to the inner surface 11e of the outer wall side pipe 11. Here, as an example of the acid-resistant coating film, there is a rubber bush in which a sheet-like covering member 18 made of acid-resistant rubber or the like is bonded to a surface to be subjected to treatment.
More specifically, in some embodiments, as shown in fig. 12, the covering member 18 is bonded to the inner surface 11e of the outer wall-side pipe 11 having the above-described convex portion 11h, the inner surface of the convex portion 11h, and the step surface 11 k. The covering member 18 is also bonded to the inner peripheral surface of the opening 12a of the hull outer wall 12, the inner peripheral surface and the bottom surface 12e of the annular recess 12d, and the inner peripheral surface 141c of the 1 st inner pipe 141. Therefore, the outer peripheral surface 41a of the outer peripheral portion 41 of the drain nozzle 4 is disposed without a gap between the inner surface 11e of the outer-wall-side pipe 11 and the inner peripheral surface of the opening 12a of the hull outer wall 12 with the covering member 18 interposed therebetween. Further, the drain nozzle 4 is configured to: the other end surface 41d of the outer peripheral portion 41 abuts on the covering member 18 provided on the step surface 11k of the outer-wall-side pipe 11. The inner side surface 13d of the drainage nozzle suppressing member 13 is disposed without a gap with respect to the bottom surface 12e of the annular recess 12d with the covering member 18 interposed therebetween, and the outer side surface 13c is substantially flush with the outer side surface 12b of the hull outer wall 12.
In some other embodiments, as shown in fig. 13, the covering member 18 is bonded to the inner surface 11e of the outer-wall-side pipe 11, and the flange portion 41g of the outer peripheral portion 41 of the drain nozzle 4 is sandwiched and fastened between the outer-wall-side pipe 11 and the 1 st inner pipe 141. The covering member 18 is also bonded to the inner circumferential surface 141c of the 1 st inner pipe 141 and the inner circumferential surface 142b of the 2 nd inner pipe 142. Therefore, the outer peripheral surface 41a of the outer peripheral portion 41 of the drain nozzle 4 is disposed without a gap from the inner surface 11e of the outer wall side pipe 11 with the covering member 18 interposed therebetween.
Since the above-described drain nozzle fixing device 1 has the acid-resistant coating applied to the inner surface 11e of the outer-wall-side pipe 11, a material having low acid resistance can be used for the outer-wall-side pipe 11.
In the above-described embodiment, examples of the coating film having acid resistance include a rubber bushing in which the sheet-like covering member 18 made of acid-resistant rubber or the like is bonded to the surface to be coated, and other examples include a coating film in which an acid-resistant paint is applied to the surface to be coated.
The present invention is not limited to the above-described embodiments, and includes modifications of the above-described embodiments and appropriate combinations of these embodiments.
In the above-described embodiments, the 1 st inner pipe 141 and the 2 nd inner pipe 142 are arranged so that their axes are the same straight line with respect to the axis 1a of the discharge nozzle fixing device 1, but may be arranged so that their axes are not the same straight line with respect to the axis 1a of the discharge nozzle fixing device 1. In the above-described several embodiments, the outer-wall-side pipe 11 has the inner surface 12c except for the convex portion 11h, which has a constant diameter, but is not limited to this, and may have a diameter that gradually increases or gradually decreases as it approaches the one end portion 11b side as compared with the other end portion 11c side. In this case, the outer peripheral portion 41 of the drain nozzle 4 may be changed to a shape corresponding to the shape of the outer wall side pipe 11.
Further, the discharge nozzle 4 in the above-described several embodiments includes the outer peripheral portion 41, the nozzle portion 42 having at least one blade 42a, and the shaft portion 43, but is not limited to this, and any configuration may be adopted as long as the desulfurized discharge water Wd treated by the desulfurizer 3 provided in the hull 21 is stirred to promote mixing with the seawater Ws around the hull 21 and is provided inside the outer wall side pipe 11.
Description of the symbols
1: a fixing device for a water discharge nozzle is arranged,
1 a: the axis of the shaft is provided with a plurality of parallel planes,
11: a pipe arranged on the side of the outer wall,
11 a: the interior space is a space which is provided with a plurality of internal spaces,
11 b: one end part of the first connecting rod is provided with a first connecting rod,
11 c: the other end part of the water tank is provided with a water inlet,
11 d: an outer side surface of the outer side surface,
11 e: the inner side surface of the inner side surface,
11 f: one end side of the valve body is open,
11 g: the other end side is open,
11 h: the convex part is provided with a convex part,
11 i: a flange portion is provided on the outer peripheral surface of the flange portion,
11 j: a through-hole is formed in the substrate,
11k is as follows: the surface of the step is provided with a step surface,
11 m: a key groove is formed on the bottom surface of the key groove,
12: the outer wall of the ship body is provided with a plurality of holes,
12 a: an opening is formed in the bottom of the container,
12 b: an outer side surface of the outer side surface,
12 c: the inner side surface of the inner side surface,
12 d: the annular concave part is provided with a concave part,
12 e: a bottom surface of the base plate,
12 f: a key groove is formed on the bottom surface of the key groove,
12 g: an internal thread part which is provided with a thread,
13: a drainage nozzle restraining member for restraining the drainage nozzle,
13 a: an outer peripheral surface of the outer ring,
13 b: an inner peripheral surface of the inner peripheral surface,
13 c: an outer side surface of the outer side surface,
13 d: the inner side surface of the inner side surface,
13e, 13 f: a through-hole is formed in the substrate,
14: an inner pipe is arranged at the inner side of the pipe,
141: the 1 st inner pipe is connected to the first pipe,
141 a: one end part of the first connecting rod is provided with a first connecting rod,
141 b: the other end part of the water tank is provided with a water inlet,
141 c: an inner peripheral surface of the inner peripheral surface,
141d, 141 e: a flange portion is provided on the outer peripheral surface of the flange portion,
141f, 141 g: a through-hole is formed in the substrate,
142: the 2 nd inner side piping is provided with a pipe,
142 a: one end part of the first connecting rod is provided with a first connecting rod,
142 b: an inner peripheral surface of the inner peripheral surface,
142 c: a flange portion is provided on the outer peripheral surface of the flange portion,
142 d: a through-hole is formed in the substrate,
15: a desulfurization drainage rectification component,
15 a: an outer peripheral surface of the outer ring,
15 b: one end surface of the first end face is provided with a plurality of grooves,
15 c: the other end surface of the end plate is provided with a groove,
15d, 15 e: a through-hole is formed in the substrate,
16: a rotation-stopping mechanism is arranged on the frame,
16 a: the interior space is a space which is provided with a plurality of internal spaces,
160: a rotation-stopping component, which is arranged on the frame,
161: a key(s) for the key(s),
162: an externally threaded member having a threaded portion,
17: the reinforcing member is provided with a reinforcing material,
17 a: on one side of the base plate,
17 b: on the other side of the film body,
18: a covering member for covering the surface of the substrate,
2: the position of the ship is determined by the position of the ship,
21: a ship body is arranged on the ship body,
21 a: the deck of the bed is provided with a plurality of deck boards,
21 b: the space in the ship is provided with a plurality of water tanks,
3: a desulfurizing device, a desulfurizing device and a desulfurizing device,
3 a: a water drainage and storage tank,
4: a water discharge nozzle is arranged at the bottom of the water tank,
41: an outer peripheral portion of the outer circumferential portion,
41 a: an outer peripheral surface of the outer ring,
41 b: an inner peripheral surface of the inner peripheral surface,
41 c: one end surface of the first end face is provided with a plurality of grooves,
41 d: the other end surface of the end plate is provided with a groove,
41 e: one end part of the first connecting rod is provided with a first connecting rod,
41 f: the other end part of the water tank is provided with a water inlet,
41 g: a flange portion is provided on the outer peripheral surface of the flange portion,
41 h: a through-hole is formed in the substrate,
41 i: a key groove is formed on the bottom surface of the key groove,
41 j: an internal thread part which is provided with a thread,
42: a nozzle part, a nozzle part and a nozzle body,
42 a: the blades are arranged on the upper surface of the shell,
43: a shaft portion which is provided on the outer circumferential surface of the shaft portion,
5: a water discharge piping is provided in the water discharge pipe,
6. 7: an externally threaded member having a threaded portion,
8: a nut member for engaging with the nut member,
lw: the water line is arranged at the bottom of the water tank,
and Wd: the desulfurization and the drainage are carried out,
ws: seawater.

Claims (13)

1. A water discharge nozzle fixing device for fixing a water discharge nozzle for stirring and mixing seawater with desulfurized water discharged from a desulfurizer provided in a ship body, the water discharge nozzle fixing device comprising:
a hull outer wall having an opening on a lower side than a water line; and
an outer wall side pipe having an internal space over an entire axial direction, having openings at both axial end portions, being cylindrical, one axial end portion being integrally fixed to an opening edge portion of the hull outer wall, the opening at the one end portion side communicating with an outside of the hull outer wall, and the other axial end portion being disposed inside the hull outer wall,
the drain nozzle is provided inside the outer wall side pipe,
the drain nozzle includes a cylindrical outer peripheral portion and a nozzle portion provided inside the outer peripheral portion,
the outer peripheral surface of the outer peripheral portion is disposed without a gap with respect to an inner surface of the outer wall-side pipe.
2. The discharge nozzle fixing device according to claim 1,
the drain nozzle fixing device further includes:
and a drain nozzle suppressing member that is detachably attached to the vicinity of the opening of the hull outer wall and prevents the drain nozzle from being detached from the opening on the one end side of the outer wall side pipe to the outside of the outer wall side pipe.
3. A discharge nozzle fixture according to claim 2,
the outer wall side pipe includes a convex portion protruding inward from an inner side surface of the other end portion,
the drain nozzle is provided inside the outer wall side pipe in a state where one end surface of the outer peripheral portion abuts against the drain nozzle suppressing member and the other end surface of the outer peripheral portion abuts against or approaches the convex portion.
4. The discharge nozzle fixing device according to claim 1,
the drain nozzle fixing device further includes:
an inner pipe connected to the other end of the outer wall pipe,
the drain nozzle includes a 1 st flange portion protruding outward from the outer peripheral surface at the other end portion of the outer peripheral portion opposite to the one end portion on the hull outer wall side,
the drain nozzle is detachably fixed to the outer wall side pipe by fastening the outer wall side pipe and the inner pipe with the first flange portion 1 interposed between the other end portion of the outer wall side pipe and one end portion of the inner pipe on the hull outer wall side.
5. The discharge nozzle fixing device according to claim 4,
the outer wall side pipe includes a 2 nd flange portion projecting outward from an outer side surface of the other end portion,
the inner pipe includes a 3 rd flange portion protruding outward from an outer side surface of the one end portion,
the drain nozzle is detachably fixed to the outer wall side pipe by fastening the 2 nd flange part and the 3 rd flange part in a state where the 1 st flange part is sandwiched between the 2 nd flange part and the 3 rd flange part.
6. A discharge nozzle fixing device according to claim 4 or 5,
the inner pipe includes:
a 1 st inner pipe connected to the outer wall side pipe; and
a 2 nd inner pipe connected to the 1 st inner pipe,
the 1 st inner pipe is formed to have a longer length dimension in the axial direction than the drain nozzle.
7. A discharge nozzle fixture according to claim 3,
the discharge nozzle fixing device further includes at least one desulfurized discharge water rectification member for rectifying the desulfurized discharge water before being stirred by the discharge nozzle,
the desulfurization drainage rectification member is fixed by being sandwiched between the other end portion of the outer peripheral portion of the drainage nozzle opposite to the one end portion on the hull outer wall side and the convex portion of the outer wall side pipe.
8. A discharge nozzle fixing device according to claim 4 or 5,
the discharge nozzle fixing device further includes at least one desulfurized discharge water rectification member for rectifying the desulfurized discharge water before being stirred by the discharge nozzle,
the desulfurization drain water rectification member is fixed by being sandwiched between the other end portion of the outer peripheral portion of the drain nozzle and the one end portion of the inner pipe.
9. A discharge nozzle fixing device according to any one of claims 2, 3, 7,
the drain nozzle fixing device further includes:
and a rotation stopping mechanism having a rotation stopping member inserted in an axial direction in a hole or a groove provided at one end portion of the outer peripheral portion of the drain nozzle on the hull outer wall side.
10. A drainage nozzle fixing device according to any one of claims 1 to 5,
the drain nozzle fixing device further includes at least one reinforcing member integrally fixed to the ship inner wall surface of the hull outer wall and integrally fixed to the outer side surface of the outer wall side pipe.
11. A drainage nozzle fixing device according to any one of claims 1 to 5,
the drain nozzle fixing device is provided with an acid-resistant coating film on the inner side surface of the outer wall side pipe.
12. A drainage nozzle fixing device according to any one of claims 1 to 5,
the drain nozzle is formed of a material having a lower strength than the outer wall side pipe.
13. A drainage nozzle fixing device according to any one of claims 1 to 5,
the one end portion of the outer-wall-side pipe is integrally fixed to the opening edge portion of the hull outer wall by welding.
CN201880010933.5A 2017-02-28 2018-02-26 Fixing device for drainage nozzle Active CN110267871B (en)

Applications Claiming Priority (3)

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JP2017-036607 2017-02-28
JP2017036607A JP6666867B2 (en) 2017-02-28 2017-02-28 Drain nozzle fixing device
PCT/JP2018/006970 WO2018159534A1 (en) 2017-02-28 2018-02-26 Drain nozzle fixation device

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KR101977013B1 (en) * 2018-04-09 2019-05-09 바르실라 핀랜드 오이 How to place a water lead-through module on the water lead-through module and the hull of the ship

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JPS6031989Y2 (en) * 1980-12-15 1985-09-25 六菱ゴム株式会社 Discharge mechanism from existing pipes
US4543900A (en) * 1982-05-21 1985-10-01 Omnithruster, Inc. Shipboard ice lubrication system and jet pump for use therein
JPH01174094U (en) * 1988-05-27 1989-12-11
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JP2011524800A (en) * 2008-06-13 2011-09-08 斯幹 彭 Exhaust gas desulfurization method and exhaust gas desulfurization apparatus for a marine vessel

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KR20190102037A (en) 2019-09-02
JP2018140730A (en) 2018-09-13
SG11201906921YA (en) 2019-09-27
CN110267871A (en) 2019-09-20
WO2018159534A1 (en) 2018-09-07
KR102355565B1 (en) 2022-01-25

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