JPS6246957Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a water sprinkling device as a heat source used in an open rack vaporizer for vaporizing liquefied gas.

There are many types of liquefied gas vaporizers, and each type is used depending on the purpose and application. Among these, open rack type vaporizers are frequently used because of their relatively simple construction as described below, economical efficiency, stability of vaporization performance, and ease of maintenance and maintenance.

The general configuration of an open rack vaporizer is
As shown in the figure, a panel unit 4 is made up of a panel 1 in which a large number of tubes are arranged in a curtain shape, a lower header 2 that supplies liquefied gas to the lower part of the panel 1, and an upper header 3 that collects vaporized gas. Seawater or water is dropped along the panel 1, and while the liquefied gas rises from the lower header 2 into the tube of the panel 1, heat exchange progresses, vaporization is completed, and it flows from the upper header 3 into the gas storage tank.

Seawater is mainly used as this heat source due to economic efficiency, but conventionally, a water spray device that drops seawater along the panel has box-shaped troughs 5 with open tops placed opposite each other on both sides of the top of the panel 1. However, a configuration is adopted in which the seawater is made to flow in from the water spray nozzle 8 facing the opening surface of the trough 5 and overflow from the edge portion 6 of the trough 5 on the panel 1 side. The water spray nozzle 8 branches from a water spray header 9 arranged in parallel below the trough 5 to supply seawater. A partition plate 7 having, for example, an L-shaped cross section as shown in the figure is provided in the trough 5 so as not to transmit the ripples of seawater falling from the water nozzle 8 to the water overflowing from the edge portion 6.

By the way, when seawater is used as a heat source, in a conventional water sprinkler system, the water spray header 9, which has approximately 12 to 24 water spray nozzles 8 for one panel unit 4, maintains the flow velocity in its pipes at a constant value over the entire length. Because it was difficult to maintain the above-mentioned temperature, marine organisms such as algae and shellfish often adhered and grew, and in some cases, the grown shellfish flowed downstream and partially blocked the space between the edge part 6 and the panel 1. There is also. If a break occurs in the seawater falling along the panel 1, not only will vaporization not proceed, but there is a risk that the corresponding portion of the panel 1 will be exposed to local thermal stress.

Therefore, this invention proposes a water sprinkling device with a new structure that eliminates the need for special seawater treatment to prevent marine organisms from adhering to the water sprinkling mechanism.

In other words, this idea consists of a trough provided in parallel between a pair of panel units, an edge portion protruding diagonally downward on the panel side at both upper edges of the trough facing the panel, and a trough inside the trough. This is a water sprinkling device consisting of a partition plate and a water supply pipe that faces the top, side, or bottom of the trough or is inserted through a hole.

The water sprinkling device according to this invention will be explained below based on the drawings. FIG. 2 is a longitudinal sectional view of this device, and FIG. 3 is a side view showing the water supply pipe and trough.

Each trough 10 is provided parallel to the panel 1 between the parallel panel units 4, and has an open top surface, the length of which corresponds to the length of the panel 1, and a width that allows both sides of the trough 10 to face each panel 1. between a pair of panel units. Further, an edge portion 11 protruding obliquely downward is provided at the upper edge of the trough 10 on the panel 1 side so that the seawater supplied into the trough 10 overflows and falls along the panel 1.

Next, water is supplied into the trough 10 by disposing a water supply pipe 12 above the opening surface of the trough 10, with the pipe end facing the opening surface. In the drawing, the tube ends are shown facing the center of the trough 10, but they may also be placed facing both ends of the trough 10. Also, panel 1 of trough 10
It is also possible to introduce seawater into the trough by opening a hole in the side surface perpendicular to the trough and connecting the water supply pipe 12 thereto. Furthermore, it is also preferable to open a hole in the center of the bottom of the trough 10 and insert and connect the water supply pipe 12 thereto.

In order to prevent seawater from rippling on the water surface of the trough 10 during the water supply described above, which propagates to the edge portion 11 and causing a change in the amount of water overflowing, the trough 10
Two partition plates 13 sandwich the water supply pipe 12 therein.
will be established. Since the supplied seawater flows to the edge portion 11 through between the lower end of the partition plate 13 and the inner bottom of the trough 10, ripples on the water surface between the partition plates 13 do not propagate to the edge portion 11. The partition plate 13 may be a flat plate or a perforated plate as shown in the drawings, or may be a conventional L-shape, and various shapes can be used.

The sprinkler system with the above-mentioned configuration eliminates the need for the sprinkler nozzle and header that were required in conventional equipment, and has a simple structure that not only facilitates maintenance and inspection, but also prevents marine organisms from entering the water supply pipes. No more adhesion. That is, the flow velocity in the water supply pipe of this invented device can always be maintained at 3 m/sec or more over the entire length, and in this case, the adhesion and growth of marine organisms can be prevented. Furthermore, since the top surface of the trough is open, cleaning is easy.

Therefore, the adhesion of marine life within the pipe is prevented, and by adding easy maintenance to the trough, the originally excellent ability to water the panels is fully utilized without being hindered. Since the water sprinkler itself prevents the attachment of marine organisms, there is no need to add chlorine or the like to seawater to prevent the attachment of marine organisms, which is a commonly used method, and problems associated with the use of chlorine or the like do not occur.

[Brief explanation of drawings]

FIG. 1 is a partially vertical perspective view showing a conventional water sprinkler, FIG. 2 is a partially vertical sectional view showing the water sprinkler of this invention, and FIG. 3 is a side view showing the arrangement of a trough and a water supply pipe. In the diagram, 1...panel, 2...lower header, 3...
...Top header, 4...Panel unit, 5...Trough, 6...Edge portion, 7...Partition plate, 8...Water nozzle, 9...Water header, 10...Trough,
11... Edge portion, 12... Water supply pipe, 13... Partition plate.

Claims (1)

[Scope of utility model registration request] A trough with the upper surface of one tank opened in parallel between a pair of panel units, an edge portion protruding diagonally downward on the panel side at both upper edges of the trough facing the panel, and a An open rack type vaporizer consisting of two partition plates placed inside the trough to divide it into two rooms, and a water supply pipe inserted into the trough that faces or opens at one of the top, side, and bottom openings of the trough. sprinkler system.