JP2008095752A - Piping part for repairing ballast water system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping part for repairing a ballast water system capable of decreasing time and cost of a work by effectively utilizing an existing piping system when assembling a new ballast water treating device to existing water intake piping system and drain piping system. <P>SOLUTION: The piping part for repairing the ballast water system has a header pipe with a straight pipe part, an open/close valve provided at the straight pipe part of the header pipe, at least a branch pipe respectively provided both sides of the open/close valve provided at the straight pipe part of the header pipe and the open/close valve provided at a straight pipe part of the branch pipe or has the header pipe with the straight pipe part, two open/close valves provided at the straight pipe part of the header pipe, at least a branch pipe respectively provided both sides of the respective two open/close valves provided at the straight pipe part of the header pipe and the open/close valves provided at the straight pipe part of the branch pipe. Preferably, connection parts are provided at both ends of the header pipe and an end part of the branch pipe. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a ballast water system repair piping component, and more specifically, when a new ballast water treatment device is incorporated into an existing ship, a water intake piping system for taking seawater into a ballast tank and a drain piping system for discharging ballast water. The present invention also relates to ballast water system renovation piping parts that can reduce the time and cost of remodeling work.

  A cargo ship that transports crude oil or containers is provided with a ballast tank in order to maintain the stability of the hull during navigation. Normally, when crude oil is not loaded, the ballast tank is filled with ballast water, and the ballast water is discharged when loading crude oil, containers, etc., thereby adjusting the buoyancy of the hull and stabilizing the hull. .

  As described above, the ballast water is water necessary for the safe navigation of the ship, and the seawater of the port that performs cargo handling is usually used. The amount is estimated to be 3-4 billion tons per year worldwide.

  By the way, aquatic organisms inhabiting the port where the water is taken are mixed in the ballast water, and these aquatic organisms are transported to foreign countries at the same time as the ship moves.

  Therefore, the destruction of ecosystems, such as the replacement of existing species with species that did not originally live in the sea, has become serious.

  Against this background, a convention for the regulation and management of ship ballast water and sediment (hereinafter referred to as the Convention) was adopted at the diplomatic meeting of the International Maritime Organization (IMO), and the ballast water treatment device was used. The obligation to carry out ballast water management is expected to be applied from 2009 onwards.

  In addition, the discharge standards for ballast water are defined by the Convention as shown in Table 1 below.

  In view of the above background, there is an urgent need to develop ballast water treatment technology that can solve the above-described problems.

  Conventionally, as a technique for physically treating water containing microorganisms such as plankton, Patent Document 1 discloses a technique for sterilizing or sterilizing microorganisms in ballast water by injecting ozone gas into the ballast water. Yes.

  Further, Patent Document 2 discloses a technique in which water containing aquatic organisms is passed through a slit plate by a high-pressure pump to mechanically destroy and kill aquatic organisms.

  However, the above Patent Documents 1 and 2 do not disclose a problem when applied to an actual ship. For example, even in an existing container ship, seawater is taken into the ballast tank when the container cargo is lowered to the land, and ballast water is discharged when the container cargo is loaded.

  The existing container ship is equipped with a pump that introduces ballast water into the ballast tank, an intake piping system, and a drain piping system. The intake piping system and the drain piping system are installed at a high density on the bottom of the engine room. Piping remodeling work to install a new ballast water treatment system is difficult.

In addition, when a ballast water treatment device is provided in an existing container ship, short-term and low-cost construction is required in order to shorten the movement stop period of the container ship and to suppress construction costs.
JP 2004-160437 A JP 2003-200156 A Patent No. 2629094 gazette Sprinkler piping parts

  Therefore, an object of the present invention is to renovate a ballast water system that can effectively use the existing piping system and reduce the construction time and cost when incorporating a new ballast water treatment device into an existing intake piping system or drainage piping system. To provide piping parts.

  Other issues will become apparent from the following description.

  The above problems are solved by the following inventions.

(Claim 1)
A header pipe having a straight pipe part, one on-off valve provided in the straight pipe part of the header pipe, and at least one provided on both sides of the on-off valve provided in the straight pipe part of the header pipe A ballast water-based renovation piping component, comprising: a branch pipe and an on-off valve provided in a straight pipe portion of the branch pipe.

(Claim 2)
A header pipe having a straight pipe portion, two on-off valves provided on the straight pipe portion of the header pipe, and two on-off valves provided on each of the two on-off valves provided on the straight pipe portion of the header pipe A ballast water-based renovation piping component comprising: at least one branch pipe formed and an on-off valve provided in a straight pipe portion of the branch pipe.

(Claim 3)
3. The ballast water system renovation piping component according to claim 1, further comprising connecting portions at both ends of the header pipe and at an end of the branch pipe.

  According to the present invention, when installing a new ballast water treatment device into an existing intake piping system or drainage piping system, a pipe component for repairing a ballast water system that can effectively use the existing piping system and reduce construction time and cost can be obtained. Can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  An example of a new ballast water treatment apparatus to which the ballast water-based repair piping component of the present invention is applied will be described with reference to FIG.

  FIG. 1 is a configuration diagram showing an outline of a main part of a ballast water intake system diagram of an existing container ship provided with an example of a ballast water treatment apparatus to which the ballast water system repair piping parts of the present invention are applied, and FIG. FIG. 3 is a cross-sectional view taken along line aa in FIG. 1.

  Here, the example shown in FIG. 1 exemplifies a container ship carrying containers as a ship. The existing intake piping system and drainage piping system are indicated by bold lines, and the newly established piping system and equipment are indicated by thin lines.

  In the figure, 1 is a hull, 2 is a ballast tank disposed in the vicinity of the bow of the hull 1, 100 is a luggage room for accommodating containers, and 200 is an engine room.

  Ballast water (seawater or fresh water) is taken into each ballast tank 2 by operation of the ballast pump 4 from a sea chest 3 provided near the bottom of the ship. Ballast water contains aquatic organisms such as zooplankton, phytoplankton, and bacteria.

  The ballast pump 4 is provided in a water intake pipe 5 that takes in the ballast water from the sea chest 3 into the hull 1, and a strainer 6 is interposed on the primary side (the front side of the ballast pump 4).

  The strainer 6 is for removing relatively large contaminants in the ballast water flowing into the ballast pump 4. For example, holes of 5 to 10 mmφ, preferably 8 mmφ are opened at a pitch of 5 to 15 mm, preferably 11 mm. You can use what you have.

  A drain pipe 7 is disposed so as to cross the hull 1, and both ends thereof are connected to drain ports 8 and 8 provided on both sides of the hull 1. An intake pipe 5 ′ on the secondary side (exit side) of the ballast pump 4 is connected to the middle part of the drain pipe 7.

  Reference numeral 9 denotes a main pipe for transferring ballast water, and one end of the main pipe is connected to the middle part of the drain pipe 7. The other end is connected to a water pouring / nozzle 10 disposed in each ballast tank 2 for water pouring and draining of each ballast tank 2.

  Reference numeral 11 denotes a bypass pipe used for draining the ballast water in each ballast tank 2 to the outside of the hull 1 by operation of the ballast pump 4, and a primary pipe (inlet side) intake pipe on the main pipe 9 and the ballast pump 4. 5 is arranged so as to connect between the two.

  The components 12a and 12b are on-off valves.

  A new ship ballast water treatment device 13 is provided in the existing ballast water system piping. As for this processing apparatus 13, the mechanical destruction process of the aquatic organism by an ozone process and a slit board is mentioned, for example. 14 is an activated carbon treatment tower for treating bromide oxidant when ballast water is discharged from the ballast tank 2. In the illustrated example, two activated carbon treatment towers 14a and 14b are provided. Reference numeral 15 denotes a sampling facility.

  When this apparatus is newly installed, the construction time and construction cost can be reduced by applying the present invention described below.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 4 is a view showing a first embodiment of a ballast water system renovation piping component according to the present invention, in which 700 is a piping component, 701 is a header tube, and 702, 707 and 709 are automatic or manual. On-off valves 703 and 704 are connection portions made of, for example, flanges, 705 and 706 are branch pipes provided in the header pipe 701 at a right angle, for example, and 708 and 710 are flanges of the branch pipes 705 and 706, respectively. It is a connection part which consists of etc.

  In the structure of the present invention, one open / close valve 702 is provided in the straight pipe portion of the header pipe 701. Branch pipes 705 and 706 are provided on both sides of the on-off valve 702. Further, one open / close valve 707 and 709 is provided in the straight pipe portion of each branch pipe 705 and 706, respectively.

  The diameter of the header pipe 701 is the same as the diameter of the existing ballast water system pipe, and the length is about 5 to 10 times the pipe diameter in order to be effectively used as the pipe component 700, for example, 1.5 to 3 m. A range is preferred.

  Further, the branch pipes 705 and 706 are used for various applications necessary for repairing existing pipes. For example, inlet pipes and outlet pipes of a ballast water treatment apparatus, prefilter backwash drain pipes, activated carbon treatment tower inlet pipes and outlet pipes. There are sampling equipment inlet piping and outlet piping. The diameters of the branch pipes 705 and 706 can be set according to the application. For example, the inlet pipe and the outlet pipe of the ballast water treatment apparatus are 100 to 300 mm, the prefilter backwash drain pipe is 100 to 300 mm, the activated carbon treatment tower It is 100 to 300 mm for the inlet piping and the outlet piping, and 100 to 300 mm for the sampling facility inlet piping and outlet piping.

  This aspect is the minimum unit in the present invention, and can be used alone or in combination.

  By adopting the configuration as described above, the present invention replaces the piping at the construction site all at once when installing a new ballast water treatment device on the ballast line densely piped at the bottom of the existing container ship. Make it possible to do. For this reason, since there are few construction parts, a construction cost can be suppressed, the time for a remodeling work can be reduced, and the movement stop period of a container ship can be shortened.

  Generally, a flange is used to connect the pipe and the valve. However, in order to minimize ozone leakage, it is desirable that the pipe and the valve are connected by welding or the like at the factory.

  FIG. 5 is a diagram showing a second embodiment of the ballast water-based renovation piping component 700 of the present invention. In the embodiment shown in FIG. 4, an open / close valve 702 ′ is added to the straight pipe portion of the header pipe 701. is there. In the figure, the same reference numerals as those in FIG. 4 have the same configuration, and the description thereof is omitted.

  Compared with the first embodiment shown in FIG. 4, the presence of the on-off valve 711 makes it possible to replace the pipes of more construction sites in a lump. Construction time can be reduced.

  FIG. 6 is a view showing a third embodiment of the piping component 700 for ballast water system repair according to the present invention. In the example shown in the figure, two on-off valves 718 and 719 are provided in the straight pipe portion of the header pipe 717. Two branch pipes 722 and 723 are provided on both sides of the opening / closing valve 718, and two branch pipes 724 and 725 are provided on both sides of the opening / closing valve 719, respectively. Reference numerals 720, 721, 727, 729, 731, and 733 are connection portions made of, for example, flanges, and 726, 728, 730, and 732 are on-off valves provided in the respective branch pipes.

  This embodiment differs from the second embodiment shown in FIG. 5 in that branch pipes are provided on both sides of all on-off valves on the header pipe, and that the total number of branch pipes provided on the header pipe is different. It is different.

  This aspect can be combined with the first embodiment and the second embodiment, and since this aspect has the above-described configuration, if this aspect is used in more complicated piping work, Construction costs can be further reduced.

  Furthermore, the embodiments shown in FIGS. 7 and 8 are also preferable embodiments.

  The example shown in FIG. 7 is obtained by adding branch pipes 711 and 712 to the outside of the branch pipes 705 and 706 in the example shown in FIG. The example shown in FIG. 8 is obtained by adding branch pipes 734 and 735 to the example shown in FIG.

  The above aspects can be used alone or in combination as appropriate according to the piping work. In addition, by doing so, it is possible to cope with various piping work, and it is possible to reduce the construction time and construction cost.

  Next, based on FIGS. 9-11, the example which applied this invention to the existing piping is demonstrated.

  FIG. 9 shows an application example of the present invention in the case where the ballast water treatment device 13 is incorporated in an existing pipe, the right side in the figure shows the existing pipe before application, and the left side shows the first embodiment shown in FIG. The example which applied the piping components is shown.

  FIG. 10 shows an application example of the piping component (upper side in the drawing) shown in FIG. 8 and the piping component (lower side in the drawing) shown in FIG.

  FIG. 11 shows an application example of the piping component shown in FIG. 7 (upper side in the drawing) and the piping component shown in FIG. 6 (lower side in the drawing).

  9 to 11, the existing piping is shown in black, and the piping parts of the present invention are shown in white.

The block diagram which shows the outline of the principal part of the ship provided with the processing apparatus for ship ballast water in planar view The block diagram which shows the outline of the principal part of the ship provided with the processing apparatus of ship ballast water by a side view Aa line sectional view in FIG. Sectional drawing which shows the 1st aspect of the piping components for ballast water repair in this invention Sectional drawing which shows the 2nd aspect of the piping components for ballast water repair in this invention Sectional drawing which shows the 3rd aspect of the piping components for repair of ballast water in this invention Sectional drawing which shows the 4th aspect of the piping component for ballast water repair in this invention Sectional drawing which shows the 5th aspect of the piping component for ballast water repair in this invention The figure which shows an example to which this invention is applied The figure which shows the other example to which this invention is applied The figure which shows the other example to which this invention is applied

Explanation of symbols

1: Hull 2: Ballast tank 3: Sea chest 4: Ballast pump 5: Intake pipe 6: Strainer 7: Drain pipe 8: Drain port 9: Main pipe 10: Pouring nozzle 11: Bypass pipe 12a, 12b: On-off valve 13 : Ballast water treatment device 14: Activated carbon treatment tower 15: Sampling equipment 100: Loading room 200: Engine room 700: Piping parts 701, 717: Header pipe 702, 702 ', 707, 709, 713, 715, 718, 719, 726 , 728, 730, 732, 736, 738: Open / close valve 703, 704, 708, 710, 714, 716, 720, 721, 727, 729, 731, 733, 737, 739: Connection part 705, 706, 711, 712 , 722, 723, 724, 725, 734, 735: branch pipe

Claims (3)

  A header pipe having a straight pipe part, one on-off valve provided in the straight pipe part of the header pipe, and at least one provided on both sides of the on-off valve provided in the straight pipe part of the header pipe A ballast water-based renovation piping component, comprising: a branch pipe and an on-off valve provided in a straight pipe portion of the branch pipe.   A header pipe having a straight pipe portion, two on-off valves provided on the straight pipe portion of the header pipe, and two on-off valves provided on each of the two on-off valves provided on the straight pipe portion of the header pipe A ballast water-based renovation piping component comprising: at least one branch pipe formed and an on-off valve provided in a straight pipe portion of the branch pipe.   3. The ballast water system renovation piping component according to claim 1, further comprising connecting portions at both ends of the header pipe and at an end of the branch pipe.