JPS5838676B2 - Open rack type vaporizer top water sprinkler system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water sprinkling device as a heat source used in an open rack type vaporizer for vaporizing liquefied gas.

There are many types of liquefied gas vaporizers, and they are used depending on the purpose and application.

Among them, open rack type vaporizers are widely used because they are superior in terms of economy, stability of vaporization performance, and ease of maintenance compared to other types, but their performance and ease of maintenance depend on the performance of the sprinkler system. It is taking place.

First, the general configuration of an open rack type vaporizer will be described based on FIG.

The heat exchange panel 1 consists of a panel 2 in which a large number of tubes are arranged in a curtain shape, a lower header 3 that supplies liquefied gas to the lower part of the panel 2, and an upper header 4 that collects vaporized gas.

Seawater or water is made to fall from the top of the panel 2 as a heat source along the surface of the panel 2, and while the liquefied gas rises from the bottom/rudder 3 inside the tube of the panel, heat exchange progresses and vaporization is completed. It then flows through the manifold towards the storage tank.

Seawater is mainly used as the heat source due to economic efficiency, but
Conventionally, a water spraying device that drops seawater along the panel surface has box-shaped troughs 5 with open tops arranged opposite each other on both sides of the upper part of the panel 2, and the seawater is fed by a watering header 8 arranged parallel to the bottom of the troughs 5. The water is injected from a water spray nozzle 9 which branches into a larger number of branches and whose tip faces the opening of the trough 5.

The water in the trough 5 is caused to overflow from an edge portion 6 protruding from the upper edge of the trough 5 on the panel 2 side.

Further, a partition plate 7 is provided in the trough 5 to prevent ripples of water falling from the nozzle 9 from propagating to the edge portion.

By the way, the number of water spray nozzles 9 branching from the water spray header 8 is 1.
There are about 12 to 24 of them per heat exchange panel 1, and the flow velocity within the water spray header 8 is partially slowed down, so if seawater is used as a heat source, sea creatures such as algae and shellfish will grow inside the water spray header 8. May attach and grow.

It may also adhere to the space between the lower end of the partition plate 7 in the trough 5 and the bottom of the trough 5, or to the corners of the bottom.

The grown shellfish flow downstream and are shown in panel 2.
If the gap between the tube and the edge portion 6 is clogged, or a break occurs in the falling seawater, not only will vaporization within the tube not progress, but there is a risk that the corresponding portion of the tube 2 will be exposed to local thermal stress.

In addition, the algae that have grown may slow down the water flow and reduce watering performance.

Conventionally, chlorine has been added to seawater to prevent marine organisms from adhering to it, but this has been associated with corrosion of equipment and problems with wastewater treatment.

This invention proposes a water sprinkling device with a novel structure that has excellent performance in diverting water to each panel and can prevent the attachment and growth of sea creatures.

That is, this invention has a configuration in which a panel group in which a plurality of heat exchange panels are arranged in parallel is arranged below a water storage tank provided with a means for sterilizing the water inside, and a panel group with a plurality of heat exchange panels arranged in parallel is arranged at the bottom of the water storage tank. The water channels of the box body are made to hang down in parallel to form a distribution channel, each upper header is loosely inserted between the plurality of protruding distribution channels on the outer surface of the bottom of the water tank, and a slit spanning the length of the panel is provided at the bottom of the distribution channel, and water is stored through this slit. This is a water sprinkling device that allows seawater injected into a tank from a water supply pipe to fall along a panel.

According to this invention, since the water surface in the water storage tank has a water head relative to the slit at the bottom, the amount of water flowing from the slit to the panel surface can be made uniform in the longitudinal direction of the panel and for each panel.

As a means of sterilizing the water inside the water tank, various methods can be used in addition to a normal chlorine injection device, but as shown in the example, ultraviolet irradiation lamps can be arranged and installed at predetermined intervals above the opening surface of the water tank. The constant irradiation prevents marine life from attaching to the water, eliminating the need for regular chlorine injection.

Embodiments according to the present invention will be described below based on the drawings.

FIG. 2 is a partial vertical cross-sectional view of the sprinkler device, and FIG. 3 is a top view thereof.

Here, a case will be described in which a group of six heat exchange panels 1 arranged in parallel constitutes one unit of a vaporizer.

The water tank 10 is provided above the panel group and has a bottom surface large enough to cover all of them.
Seven distribution channels 12 are protruded from one side at regular intervals.

The upper header 4 of the heat exchange panel 1 is loosely inserted into the recess formed by the water tank bottom 11 and the protruding distribution channel 12.

The distribution channel 12 is parallel to the panel 2, has a length equal to the length of the panel, and has an arbitrary width that projects from the tank bottom 11 depending on, for example, the distance between the panels 2 necessary to arrange the panels 2 in parallel.

and a panel 2 at the bottom of the protruding distribution channel 12.
A slit portion 13 is opened across the panel length facing the
Water is allowed to fall from this slit portion 13 onto both sides of the panel 2 standing upright between the distribution channels 12.

In the drawing, the distribution channel 12 has a chevron-shaped bottom and a slit at the bottom end to direct the water flow toward the panel 2.

Moreover, since the distribution channel 12a hanging down at both ends has only one surface on the two opposing panels, the bottom surface thereof is an inclined bottom and a slit portion 13 is provided at the bottom end.

Various shapes can be used for the bottom of the distribution channel 12 and the slit portion 13 in addition to those described above. For example, an edge may be made to protrude toward the panel from the slit portion, and water may fall along this edge toward the panel.

Next, to supply water to the water tank 10, a water supply pipe 14 is arranged above the water tank 10, and the opening 15 of the water supply pipe 14 is placed on the surface of the bottom 11 of the water tank where the distribution channel 12 is not provided.

In the drawing, two openings 15 are provided at both ends of the water tank 10.

The arrangement, shape, and aperture of this water supply pipe can be selected as appropriate.

The seawater injected into the water storage tank 10 is stored in the water storage tank 10,
The water surface has a position head h with respect to the slit portion 13.

The amount of water flowing from the slit portion is determined by this head pressure, and the flow from the slit portion 13 according to the present invention can be uniformly distributed over the entire slit portion.

In addition, the seawater injected into the water tank 10 ripples on the water surface, but the height of the waves is small compared to the water head pressure, so it can be ignored, and the flow from the slit is not affected and a good diversion is achieved. can be held.

Furthermore, since the entire upper surface of the water tank 10 is open, cleaning and maintenance are not only facilitated, but also ultraviolet irradiation lamps 16 are arranged at appropriate intervals above the water surface of the water tank 10, as shown in FIG. When installed, the entire interior of the water tank 10 can be irradiated with ultraviolet rays.

That is, since the distribution channel 12 and the slit portion 13 are located on a straight line from the opening surface of the water tank, sufficient ultraviolet rays are irradiated.

It is known that this irradiation with ultraviolet rays prevents the adhesion and growth of marine organisms within the water storage tank 10, but the water storage tank serving as the watering device according to the present invention has a shape suitable for irradiation with ultraviolet rays as described above. ing.

As described above, this is an excellent water sprinkling device that eliminates the need for the complicated configuration of conventional water sprinkling nozzles and water sprinkling headers, and can prevent marine organisms from attaching to it with a simple structure consisting of only a water tank with an open top.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal sectional perspective view of a conventional water sprinkling device, FIG. 2 is a partially longitudinal sectional view of the water sprinkling device of the present invention, and FIG. 3 is a top view of the present invention device. In the figure 1... Heat exchange panel, 4... Upper header, 10
...Water tank, 11...tank bottom, 12...distribution channel. 13...Slit part, 14...Water supply pipe, 15...
Opening, 16...UV irradiation lamp.

Claims (1)

[Claims] 1. Consisting of a panel group in which a plurality of heat exchange panels are arranged in parallel under a water storage tank provided with means for sterilizing the water inside, the heat exchange panels are arranged at regular intervals at the bottom of the water storage tank. Distribution channels made of a plurality of parallel box bodies are provided protrudingly, the upper header of the panel group is loosely inserted into the recess formed between the distribution channels and the bottom surface of the water tank, and a slit extending the length of the panel is provided at the bottom of the distribution channel. An open rack type vaporizer top-mounted water sprinkling device that causes water injected into the tank through this slit to fall along the panel. 2. The top-mounted water sprinkling device for an open rack type vaporizer according to claim 1, wherein an ultraviolet irradiation lamp is disposed on the opening surface of the water storage tank.