JPS5824866Y2 - Protection device for fire extinguishing liquid deflector in floating roof tank - Google Patents

Description

[Detailed explanation of the idea] In large floating roof tanks that store volatile and flammable petroleum, the floating roof inside the tank shakes due to earthquakes, etc., and strongly rubs against the surrounding wall of the tank, causing sparks. Due to the risk of fire, it is mandatory to install fixed fire extinguishing equipment.

Usually, this fire extinguishing equipment is provided with foam extinguishing fluid spouts 1 at regular intervals in the circumferential direction near the upper end of the tank peripheral wall, and a second
As shown in the figure, a deflector 2 is usually provided so that the fire extinguishing foam ejected from the spout 1 effectively flows down along the inner peripheral wall surface of the tank.

By the way, this deflector 2 is connected to the jet nozzle 1 as mentioned above.
In order to effectively cause the foam fire extinguishing liquid to flow down along the inner surface of the tank circumferential wall, it is installed to form a box-shaped cover surrounding the spout 1.

That is, it is attached so as to protrude inward from the peripheral wall surface of the tank.

Therefore, when the liquid stored in the tank is almost full, if there is an earthquake and the floating roof R shakes, the peripheral edge 3 of the floating roof R will collide with the deflector 2, destroying the deflector 2. There is a risk of

The tentative lines in FIG. 1 show the above state.

This invention relates to a deflector protection device for avoiding such danger.

The gist of the invention is that rib-shaped control plates 4 are provided on both sides of the fire extinguishing liquid deflector, which protrude further toward the center of the tank than the protruding surface of the deflector, and whose lower part gently follows the inner surface of the tank circumferential wall. It is something.

Figures 2 and 3 show examples of the deflector.
On both sides of the deflector 2, plate members projecting further inward from the protruding surface of the deflector 2 are attached, and lower portions 5, 5 of the plate members are tapered to form floating roof control plates 4, 4.

Therefore, if the floating roof R rises from below,
The peripheral edge 3 of the floating roof R slides along the edges of the control plates 4, 4 and does not directly collide with the deflector 2.

In this case, by simply attaching plate materials as described above, it is possible to prevent damage to the reflector due to the shaking of the floating roof during an earthquake, etc., and to ensure its mission as a safety device.

[Brief explanation of the drawing]

Figure 1 is a side view of a floating roof type tank, Figure 2 is a slope view of a deflector with the proposed protection device installed, and Figure 3 is another embodiment in which a deflector and a control plate are integrally assembled. FIG. 1... Fire extinguishing liquid spout, 2... Deflector, 3... Floating roof periphery, 4... Floating roof control plate, R...・Floating roof.

Claims (1)

[Scope of utility model registration request] On both sides of the fire extinguishing liquid deflectors 2 installed at regular intervals near the upper end of the surrounding wall in a floating roof tank, there are fire extinguishing liquid deflectors 2 that protrude further toward the center of the tank than the protruding surface of each deflector, and whose lower part gently follows the inner surface of the tank surrounding wall. A protection device for a fire extinguishing liquid deflector in a floating roof type tank, which is provided with floating roof control plates 4, 4.