JPS5824982Y2 - Anti-icing panels for offshore work platforms - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a panel for preventing icing on a marine work platform.

As shown in Fig. 1, the offshore work platform has a platform 1 supported on the seabed via a plurality of legs (pedestals) 2, and horizontal members 3 and diagonal members 4 arranged between each leg 2. This ensures its strength.

Further, from the platform 1, piping such as a riser pipe 5 and a sump caisson pipe 6 are extended into the sea.

When such a marine workbench is installed in a cold sea area, it is necessary to consider the effects of drift ice, icing, freezing, etc.

That is, leg members 2, horizontal members 3, diagonal members 4, riser pipes 5
If ice builds up on parts inserted into the sea, such as the sump caisson pipe 6, the pressure area of the wind and waves will increase, the load on the leg material 2 will increase due to water level fluctuations, and the buoyant force will increase. Negative weight gain may occur.

All of these situations impair the stability of the workbench and are dangerous phenomena.

Note that Ll and L2 indicate the high tide level and the low tide level, respectively.

The present invention has been devised in view of this situation, and examples thereof will be described below with reference to FIGS. 2 to 4.

IOA and IOB are half-tube-shaped divided bodies. divided body 10
A, 10B are each half-shaped inner cylinders 11A.

11B and outer cylinders 12A and 12B concentrically,
Flanges 13A, 14A, 1 are attached to the left and right edges in the circumferential direction.
3B.

It has 14B.

Inside each of the divided bodies 10A and IOB, heating fluid channels 15A and 15B for oil, steam, etc. are formed, and these channels 15
Heating fluid inlet pipes 16 are provided at the starting and terminal ends of A and 15B.
and outlet pipe 17 are connected.

The heating fluid channels 15A and 15B are each divided body 10A. 10
Although a starting end and a terminal end may be formed for each part B, in the illustrated example, two divided bodies 10A and 10B are integrally joined via flanges 13A, 14A, 13B, and 14B. In this case, the heating fluid channels 15A and 15B inside each of the divided bodies 10A and IOB communicate with each other so as to form a single channel.

That is, as shown in FIG. 4, the communicating heating fluid channels 15A and 15B extend upward in a spiral manner.

In the above, when there is a risk of ice accretion on the underwater insertion member of the offshore work platform, as shown in FIG. and the heating fluid flow path 15A.

Flow heating fluid through 15B.

This prevents icing.

In the illustrated example, flanges 13A, 14A, 13B,
14B are removably coupled by a plurality of bolts and nuts 19, but other coupling structures may be used instead.

In FIG. 3, 20 indicates a panel fall prevention device protruding from the underwater insertion member 18, and 21 indicates the sea surface.

According to the present invention explained in the embodiments above, it is possible to prevent the formation of ice on the underwater insertion member of the offshore work platform.
Structural materials such as horizontal members, diagonal members, riser pipes, sump caisson pipes, etc., and piping can be effectively protected.

[Brief explanation of drawings]

Figure 1 is a side view of the marine workbench, Figures 2 to 4 show examples of the invention, Figure 2 is a plan view, Figure 3 is a side view, and Figure 4 is the development of the internal structure. It is a diagram. 10A, IOB...divided body, 13 A, 14
A, 13 B, 14 B...flange, 15
A, 15 B...Heating fluid flow path, 16...
...Inlet pipe, 17...Outlet pipe, 18...
... Undersea insertion parts, 19... Bolts and nuts.

Claims (1)

[Scope of utility model registration request] It is characterized in that it consists of a plurality of divided bodies working together to surround the underwater insertion member of the offshore workbench, each divided body having a heating fluid flow path therein and being detachable from the insertion member. Anti-icing panel for marine work platforms.