CN211561672U

CN211561672U - Fire-fighting foam distribution device for vertical storage tank

Info

Publication number: CN211561672U
Application number: CN201922010623.8U
Authority: CN
Inventors: 葛阳; 李阳; 米丰; 许学斌; 宁远林; 任超; 樊新宇; 杨光
Original assignee: Hualu Engineering and Technology Co Ltd
Current assignee: Hualu Engineering and Technology Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-09-25
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a vertical storage tank is with fire control foam distribution device, the device install in storage tank top ring jar wall department, characterized by includes foam pipe, foam baffle and flange, the foam pipe pass jar wall insert in the storage tank, the welding of foam pipe entry end has flange, the terminal welding has the foam baffle, arc foam distribution groove has been seted up to the lower part in foam baffle and the intersecting line department of foam pipe connection. The utility model discloses it is poor effectively to solve present foam distribution device leakproofness, and the foam guidance quality is poor, spouts the inequality, and the foam covers the liquid level or the sealed inefficiency of inner floating roof and then causes the slow problem of speed of putting out a fire, and economic nature is high, simple structure, and it is convenient to install.

Description

Fire-fighting foam distribution device for vertical storage tank

Technical Field

The utility model relates to a storage tank fire control foam system, concretely relates to vertical storage tank is with fire control foam distribution device.

Background

When the storage tank stores flammable media, a fire-fighting foam system needs to be arranged. When a fire accident happens, the fire-fighting foam is sprayed into the storage tank and then covers the upper part of the liquid level to separate the medium and the air, thereby playing the role of fire prevention and extinguishment. After the fire-fighting foam is conveyed to the top of the storage tank, the fire-fighting foam is distributed in a manner that the fire-fighting foam flows to the liquid level or the sealing position of the inner floating roof along the tank wall after being guided by an arc-shaped foam guide plate tightly attached to the tank wall. The foam is guided and sprayed into the tank through an arc-shaped foam guide plate tightly attached to the wall of the tank, so that the guide performance is poor, foam falling points are dispersed, the foam distribution effect is poor, and the effective fire control and extinguishing effects can not be realized when the liquid surface is quickly covered. Meanwhile, the structural foam guide pipe is directly connected with the storage tank wall plate through the flange, as shown in fig. 4 and 5, bolt holes need to be formed in the wall of the storage tank in advance, the sealing performance of the flange connection part is poor due to the fact that the tank wall is an arc-shaped surface, leakage is prone to occurring, pressure cannot be maintained during a hydraulic test, and safety accidents can be caused during operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical storage tank is with fire control foam distribution device to the fire control foam distribution device leakproofness of solving present adoption is poor, and the foam guidance quality is poor, spouts the inequality, and the foam covers the liquid level or floats the sealed inefficiency of top and then causes the slow problem of speed of putting out a fire.

To achieve the above object, the technical solution of the present invention includes the following: the utility model provides a vertical for storage tank fire control foam distribution device, the device install in storage tank top ring jar wall department, characterized by includes foam pipe, foam baffle and flange, the foam pipe pass in the jar wall inserts the storage tank, the welding of foam pipe entry end has flange, the welding of end has the foam baffle, arc foam distribution groove has been seted up to the foam baffle and the lower part in the intersecting line department of foam pipe connection.

Preferably, the foam guide is spherical crown shaped with its convex side facing outwards.

Preferably, the radius of curvature of the arc of the foam guide is 1.2 times the nominal diameter of the foam conduit.

Preferably, the arc of the arc-shaped foam distribution groove opening should be no greater than 200 °.

Wherein the connecting flange is directly connected with an external foam generator through a fastener to form a fire-fighting foam system. When the fire-fighting foam system is opened, fire-fighting foam liquid enters the foam guide pipe from an outlet of the external foam generator, is sprayed out from the arc-shaped foam distribution groove after being deflected by the foam guide plate, is sprayed to the tank wall in a fan-shaped flow pattern high-efficiency and uniform manner, falls along the tank wall, rapidly covers the liquid level or is sealed by the inner floating roof, and effectively solves the problems that the existing foam distribution device is poor in sealing performance, poor in foam guiding performance and uneven in spraying, the foam covers the liquid level or is low in sealing efficiency of the inner floating roof, and further causes low fire extinguishing speed, and the fire-fighting foam system is high in economy, simple in structure.

Compared with the prior art, the utility model discloses beneficial effect embodies as follows:

the utility model discloses can effectively solve the fire control foam distribution device that adopts at present and connect the leakproofness poor, the foam guidance quality is poor, spouts the inequality, and the foam covers the liquid level or floats the sealed inefficiency of top and then causes the slow problem of speed of putting out a fire, and then improves the security of storage tank system.

Drawings

Figure 1 is the utility model discloses fire control foam distribution device sketch map.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a side view of fig. 1.

FIG. 4 is a front and top view of a prior art firefighting foam as described in the background section directed through an arcuate foam guide into a tank, the conduit being directly connected to the tank wall by a flange.

Fig. 5 is a top view of fig. 4.

In the drawings: 1-foam conduit, 2-foam guide plate, 3-connecting flange, 4-arc foam distributing groove, 5-foam generator.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, 2, vertical for storage tank fire control foam distributor, including foam pipe 1, foam baffle 2, flange 3, in foam pipe 1 passed a jar wall and inserted the storage tank, the welding of foam pipe entry end has flange 3, and the welding of end has foam baffle 2, and arc foam distribution groove 4 has been seted up to foam baffle 2 and the lower part in the intersecting line department that foam pipe 1 is connected. Wherein the foam guide plate 2 is in a spherical crown shape, and the convex surface of the foam guide plate faces outwards.

The nominal diameter of the foam conduit 1 corresponds to the diameter of the outlet of the external foam generator 5.

The extending length of the foam conduit 1 and the width of the arc-shaped foam distribution groove 4 are combined with the fire-fighting foam amount, and are determined by analog numerical analysis or experiments, so that the foam is distributed on the liquid level most efficiently after being sprayed, and no bias current or short circuit is generated.

The convexity of the foam guide 2 should ensure that the roughness is not greater than Ra2.5.

The radius of curvature of the arc of the foam guide plate 2 is 1.2 times the nominal diameter of the foam guide tube 1.

The foam conduit 1 and the tank wall should be welded in a full penetration structure.

As shown in fig. 3, the arc of the opening of the arc-shaped foam distribution groove 4 should be not more than 200 °.

Wherein the connecting flange 3 is directly connected with the external foam generator 5 through a fastener to form a fire-fighting foam system. When the fire-fighting foam system is opened, fire-fighting foam liquid enters the foam guide pipe 1 from the outlet of the external foam generator 5, is sprayed out from the arc-shaped foam distribution groove 4 after being baffled by the foam guide plate 2, is sprayed to the tank wall in a fan-shaped flow pattern high-efficiency and uniform manner, falls along the tank wall, and rapidly covers the liquid level or is sealed by the inner floating roof, so that the problems that the existing foam distribution device is poor in sealing performance, poor in foam guiding performance and uneven in spraying, and the foam covers the liquid level or is low in sealing efficiency of the inner floating roof, so that the fire extinguishing speed is slow are effectively solved, and the fire-fighting foam system is high.

The above-mentioned embodiments are further detailed descriptions of the technical problems and technical solutions of the present invention, and should not be construed as limitations of the present invention. It should be understood that the directions or positional relationships indicated in the present invention are the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the components indicated must have specific directions. The terms "mounted", "connected", etc. are to be understood broadly and may be, for example, a fixed connection or a removable connection. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a vertical for storage tank fire control foam distribution device, the device install in storage tank top ring jar wall department, characterized by includes foam pipe (1), foam baffle (2) and flange (3), foam pipe (1) pass the jar wall and insert in the storage tank, the welding of foam pipe entry end has flange (3), and the end welding has foam baffle (2), and arc foam distribution groove (4) have been seted up to the lower part in the intersecting line department that foam baffle (2) and foam pipe (1) are connected.

2. The fire-fighting foam distribution device for the vertical storage tank as recited in claim 1, wherein the foam guide plate (2) is in the shape of a spherical cap with its convex surface facing outward.

3. The fire fighting foam distribution device for vertical storage tanks according to claim 2, characterized in that the radius of curvature of the arc of the foam guide plate (2) is 1.2 times the nominal diameter of the foam conduit (1).

4. The fire fighting foam distribution device for the vertical storage tank as recited in claim 1, wherein the arc degree of the opening of the arc-shaped foam distribution groove (4) is not more than 200 °.

5. The fire fighting foam distribution device for the vertical storage tank as recited in claim 1, wherein the connection flange (3) is directly connected with the external foam generator (5) through a fastening member to constitute a fire fighting foam system.