JPS601356Y2 - Water sprinkler device for liquefied natural gas vaporizer - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a device for sprinkling seawater or industrial water as a heat medium onto a heat exchange panel of an open rack type vaporizer that is often used as a liquefied natural gas vaporization device.

An open rack type vaporizer heats a heat exchange section made up of a panel by connecting a plurality of fin tubes by causing seawater or aqua regia (industrial water) to flow down in a film form from the top of the panel.

The water sprinkling device used for this purpose is constructed so that overflowing water flows down onto the panel surface from a trough, which is a water sprinkling gutter that is arranged parallel to the panel in the longitudinal direction.

As described above, seawater is usually used as the heat medium in consideration of economic efficiency, and therefore, there is a problem that sea creatures may adhere to and grow in the trough where seawater is stored.

In particular, if grown sea creatures flow out from inside the trough and sea creatures become clogged between the panel surface and the weir plate that is attached to the entire trough wall to ensure that the overflow water flows down evenly onto the panel surface, the amount of seawater that will flow down. However, there is a problem in that the evaporation process within the panel becomes uneven due to partial differences in the amount of heat received by the corresponding panel surface due to interference with marine life, and this causes thermal distortion in the panel.

For this reason, various methods of preventing the adhesion of marine life have been investigated, but these have not been sufficient, and in the end cleaning has been carried out to remove the marine life that has adhered to the inside of the trough.

However, it is not easy to remove the attached marine life, and the removed marine life flows downstream and gets stuck between the panels as described above, so this cleaning poses various difficulties. Therefore, sufficient cleaning could not be done.

In view of the above-mentioned problems, this invention proposes a water sprinkling device that is easy to clean, such as removing sea creatures attached to the inside of the trough.

That is, this invention consists of a merging trough in which the bottom plate of two troughs is common and openings are provided at the top and bottom to form a single unit in a watering system for an open rack type vaporizer, and the merging trough is rotated around the bottom plate. This water sprinkling device has a structure in which the upper and lower water sprinkling tanks can be exchanged by rotating the merging trough.

This invention will be explained below based on drawings of embodiments.

A pair of merging troughs 1 are arranged parallel to the longitudinal direction of the heat exchange panel 2 with the heat exchange panel 2 in between.

The merging trough 1 is constructed by inserting a bottom plate 4, which will serve as a partition plate 4 for the upper and lower water tanks, in the center between two opposing side plates 3, providing openings at the top and bottom, closing both ends, and forming two gutters. shaped trough la
, lb are integrated.

Furthermore, a longitudinal support shaft 5 is fixed to the center of the bottom plate 4,
A support shaft 5 protruding from both ends of the merging trough 1 is supported by an upright support frame (not shown), and the entire merging trough 1 is supported by the support shaft 5.
It can be rotated around.

It is clear that various known means can be used for the support of the support shaft 5 and for the rotation mechanism of the merging trough 1.

Next, regarding the positional relationship between the heat exchange panel 2 and the merging trough 1, the merging trough 1 is placed facing the panel 2 with an interval that does not come into contact with the surface of the panel 2 even if the entire merging trough 1 rotates.

Therefore, since a relatively large gap is created between the edge of the merging trough 1 and the panel, the weir plate 6 is projected obliquely downward from this edge toward the panel 2 surface over the entire width of the edge within the rotational arc of the merging trough 1. It is.

That is, a water sprinkler nozzle 7 branched from a seawater supply pipe to be piped is provided above the merging trough 1, and when seawater is injected into the trough 1a that opens upward, the edge portion is The seawater overflows from the weir plate 6 and reaches the two sides of the panel, and the seawater can evenly flow down the two sides of the panel in the form of a film.

Of course, it is also possible to install ■-shaped and L-shaped rectifier plates in each trough 1a to prevent ripples on the tank 1a caused by seawater falling from the sprinkler pipe nozzle 7 from propagating to the seawater flowing down from the edge part. good.

In the above configuration, marine organisms are attached to the upper trough 1a of the merging trough 1 that has been used for a long period of time, but by rotating the merging trough 1 by half a turn and replacing it with the lower trough 1b which has been cleaned, Marine life does not flow out and become clogged between the weir plate 6 and the panel 2 surface.

In addition, the replaced trough with marine life attached to it is located outside the flow path of the sprinkler system, so naturally the marine life does not flow out to the panel 2 side during cleaning. Scraping off living things becomes extremely easy and cleaning can be carried out sufficiently.

By cleaning the lower water tank that has been cleaned and the upper water tank that is currently in use, it is possible to prevent various problems associated with the attachment and outflow of marine life.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of the water sprinkler according to this invention. In the figure, 1... merged trough, la, lb...
...Trough, 2...Panel, 3...Side plate, 4...Bottom plate, 5...Spindle, 6...
...Weir plate, 7... Water pipe nozzle.

Claims (1)

[Scope of utility model registration request] A water sprinkler that drops seawater or industrial water in a film form on the side of a heat exchange panel consists of a merging trough in which two troughs share a common bottom plate and have openings at the top and bottom, and the merging trough A water sprinkling device for a liquefied natural gas vaporizer, which consists of a rotatably supported merging trough in the center to replace the upper and lower water tanks.