CN111411615A - Foldable mesh fence oil fence for torrent river and laying method thereof - Google Patents

Abstract

Aiming at the common structural failures in the application technology of oil booms under the current working conditions of torrent waters, the present invention particularly provides a folding grid oil boom for responding to torrent rivers and a laying method thereof, belonging to the field of oil booms . The invention includes floating body, float, outer cloth, skirt connecting cloth, connecting sheet, aluminum alloy mesh plate, expansion bag, SAP water-absorbing resin fiber, floating body fixed anchor seat, mesh grid fixed anchor seat and other components. Partially replaces the skirt structure of the traditional oil boom, increases the flow of water, reduces the near-body velocity of the oil boom, reduces the force on the oil boom, and maintains the steady state of the oil boom; Open to form a double grid to improve the oil spill interception efficiency; the aluminum alloy grid wraps the oil absorbing felt to further reduce the loss of oil spill entrainment failure. Under the background of the rapid development of the current oil transportation industry, the present invention has the capability of intercepting oil spills in torrent rivers and has strong market competitiveness.

Description

A folding grid oil fence for coping with torrent rivers and its deployment method

technical field

The invention belongs to the field of oil fences, and in particular provides a folding mesh fence oil fence for coping with torrent rivers and a laying method thereof

Background technique

The oil that flows into rivers and oceans due to sudden oil spill accidents has exceeded 500× ¹⁰⁴ tons every year. The oil boom is a device widely used in water oil spill accidents on the market, which can prevent the spread of oil spills and reduce oil spills. area, and cooperate with the role of oil spill recovery. However, for torrent rivers with a flow velocity exceeding 2kn (1kn=0.514m/s), conventional oil booms are prone to structural failure under the impact of torrents, causing oil spills to carry and escape, oil splashes, oil spills and other oil booms failure situation.

At present, the common oil booms in the market reduce the resistance of the oil boom by improving the skirt structure, such as nylon net ropes and filter blades, but at the same time reduce the effective interception area of oil spills and reduce the oil interception efficiency; in addition, Rapid rivers often carry impurities such as sediment and gravel, which are easy to block the blades or damage the net rope structure at high flow rates. Therefore, how to effectively maintain the structural stability of the oil boom and achieve oil spill recovery under rapid current conditions has become an engineering problem. , The present invention provides a folding grid oil fence for dealing with torrent rivers and a method for laying the same.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the background technology, the present invention provides a folding grid oil boom for coping with torrent rivers and a method for laying the same. The features from top to bottom include: a floating body structure, a skirt body structure, and a mesh grid structure. and oil boom fixed structure.

The floating body structure is composed of a float and an outer cloth, the float material is made of EPE waterproof cotton, and the outer cloth is made of PVC waterproof cloth;

The skirt body structure is composed of a skirt body connecting cloth, a connecting piece and an expansion bag. There are 3 pieces of the skirt body connecting cloth, all of which are made of PVC cloth. is located at the lower end of the skirt body connecting cloth, and is riveted with the skirt body connecting cloth; the expansion bag is fixed on the lower end of the intermediate layer skirt body connecting cloth with screws through the connecting piece;

The grid structure is composed of 4 aluminum alloy grid plates, the aluminum alloy grid plates are filled and arranged by hexagonal cells, and the grid plates are connected by three hinges to form a foldable grid; the grid The upper end is fixed on the lower end of the skirt connecting cloth on the front and rear sides by screws through the connecting piece;

The oil boom fixing structure is composed of a floating body fixing anchor seat and a grid fixing anchor seat, the floating body fixing anchor seat is fixed on both sides of the oil boom floating body; the grid fixing anchor seat is fixed on the grid grid on both sides.

The deployment method of the folding grid and oil boom for coping with torrent rivers includes the following steps:

a) Fill the expansion bag with water-absorbing expansion material, and fastly fasten it to the lower end of the intermediate layer skirt connecting cloth through the connecting piece;

b) Open the mesh grid and fasten it to the lower end of the front and rear skirts through the connecting piece;

c) Put the folded mesh grid oil fence into the water, after the water-absorbing material absorbs water and expands, stretch the folded grid to form the front and rear two-layer grids;

d) The folding grid oil boom is towed along the deployment direction by the tugboat to the other side of the river to fix the anchor, and the oil boom is anchored on both sides of the oil boom through the fixed structure of the oil boom;

Preferably, the single-section length of the folding grid oil boom is 850mm, the height of the floating body is 400mm, and the total height of the skirt structure and the grid structure is 500mm;

Preferably, the length of the front and rear layers of the skirt body connecting cloth is 200mm, and the length of the middle layer skirt body connecting cloth is 150mm;

Preferably, the connecting piece is arranged with a threaded hole at an interval of 100mm;

Preferably, the grid material and the connecting sheet material are 7075 aluminum alloy with low density and high strength;

Preferably, the thickness of the aluminum alloy mesh plate is 10mm; the mesh is hexagonal, and the diameter of the inscribed circle is 20mm;

Preferably, the surface of the aluminum alloy mesh plate, including the mesh surface, is wrapped with a layer of thin oil-absorbing felt, and the thickness is not more than 3mm;

Preferably, the grid porosity K is 0.65;

Preferably, the expansion bag is a long-tube type water-absorbing and retractable fiber bag, and the water-absorbing expansion material is selected from water-absorbing resin fiber SAP;

Preferably, the expansion bag has a maximum diameter of 120 mm when it absorbs water and expands.

beneficial effect

Based on the principles of turbulence and lipophilic materials, the present invention designs a foldable grid oil fence to deal with torrent rivers, and the oil fence has the following innovative benefits:

(1) Compared with the common plane solid oil boom skirt, the grid structure of the present invention increases the flow of water. Under the environment of the flow velocity of 2m/s, a single section can reduce the impact force of the river by 35.3%, thereby improving the Improve the stress environment of the oil boom torrent and improve the stability of the oil boom;

(2) Compared with structures such as nylon mesh ropes and filter blades on the skirt body of the existing oil boom, the aluminum alloy mesh grid adopted in the present invention has high strength and can resist torrent impact; The fluid in the oil boom produces a turbulent effect, appropriately reducing the flow rate and improving the stability of the oil spill layer;

(3) The grid of the present invention is folded and laid flat when it is not in operation, which saves space and facilitates storage and transportation; in the working state, the minimum draft is 350mm after opening, and combined with the oil-absorbing felt on the surface, it can reduce the occurrence of oil spill entrainment failure. oil leakage rate;

(4) The present invention has two anchoring supports of the floating body and the mesh grid, which can be constrained and adjusted according to the flow rate, and at the same time, the aluminum alloy mesh grid itself has a counterweight function, which can reduce the distribution ratio of the counterweight.

Description of drawings

Fig. 1 is a kind of single-section structural schematic diagram of folding grid oil boom for coping with torrent rivers of the present invention;

Fig. 2 is the connection side view of grid and skirt of the present invention in embodiment 1;

Fig. 3 is the structural representation of the present invention in embodiment 2;

Fig. 4 is the side view of the present invention in embodiment 2;

In the picture: 1. Floating body, 2. Float, 3. Outer cloth, 4. Skirt connecting cloth, 5. Connecting piece, 6. Threaded hole, 7. Aluminum alloy mesh plate, 8. Mesh hole, 9. Expansion bag, 10.SAP water absorbing resin fiber, 11. Floating body fixed anchor seat, 12. Grid fixed anchor seat, 13. Water absorbing and stretchable fiber cloth

Detailed ways

In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below to facilitate the understanding of the skilled person.

Example 1:

Please refer to Figure 1 and Figure 2. The size parameters of the oil boom are shown in Table 1.

Table 1

When an oil spill accident occurs in torrent rivers such as the Nujiang River and the Lancang River, the construction vehicle will transport the oil fence and the net fence to the site deployment point at the same time.

Utilizing the method for laying out the folding grid and oil boom to deal with torrent rivers of the present embodiment includes the following steps:

1) First, connect the expansion bag 9 filled with the SAP water-absorbent resin fiber 10 to the intermediate layer skirt connecting cloth 4 through the threaded hole of the connecting sheet 5;

2) Then take out the aluminum alloy mesh plate 7, pass its upper end through the threaded hole 6 of the connecting piece 5, and connect with the front and rear two layers of skirt body connecting cloths 4 respectively;

3) drop the oil boom into the river, after the SAP water-absorbing resin fiber 10 absorbs water and expands, the aluminum alloy mesh plate 7 is supported to form a two-layer grid structure; Continue the above steps to assemble the oil boom simultaneously;

4) At the same time in the third step, the tugboat connects the floating body fixed anchor 11 through the tow rope, and drags the oil boom along the deployment path to the fixed anchor on the other side of the river to complete the deployment of the oil boom.

Example 2:

In this embodiment, the structural design is adjusted under the condition that the main components are the same, please refer to Fig. 3 and Fig. 4 , similar to Embodiment 1, the skirt body connecting cloth 4, the connecting sheet 5, the aluminum alloy mesh plate 7, the SAP water-absorbing resin fiber are also included. 10. The main components such as the floating body fixed anchor seat 11, the difference is that the size of the intermediate layer skirt body connecting cloth 4 is lengthened, the lower part is added with a circular mesh, and the front and rear two layers of the skirt body connecting cloth 4 are shortened in size; at the same time, the expansion bag 9 is cancelled. , the SAP water absorbent resin fiber 10 is installed between the middle layer skirt body connecting cloth 4 and the front and rear skirt body connecting cloth 4, and the lower bottom is connected with a water absorbing and stretchable fiber cloth 13.

In this embodiment, the size parameters of the oil boom are shown in Table 2.

Table 2

Utilizing the method for laying out the folding grid and oil boom to deal with torrent rivers of the present embodiment includes the following steps:

1) First, the SAP water-absorbing resin fiber 10 is filled between the intermediate layer skirt body connecting cloth 4 and the front and rear two layers of skirt body connecting cloth 4, and the bottom is sealed with a water-absorbing stretchable fiber cloth 13;

2) Then take out the aluminum alloy mesh plate 7, pass its upper end through the threaded hole 6 of the connecting piece 5, and connect with the front and rear two layers of skirt body connecting cloths 4 respectively;

3) drop the oil boom into the river, after the SAP water-absorbing resin fiber 10 absorbs water and expands, the aluminum alloy mesh plate 7 is supported to form a two-layer grid structure; Continue the above steps to assemble the oil boom simultaneously;

4) At the same time in the third step, the tugboat connects the floating body fixed anchor 11 through the tow rope, and drags the oil boom along the deployment path to the fixed anchor on the other side of the river to complete the deployment of the oil boom.

Combining the above embodiments can fully demonstrate the use route and beneficial effects of the present invention. In addition, it should be understood that the above are only preferred embodiments of the present invention. Although this specification is described according to the embodiments, not every embodiment only includes It is an independent technical solution. This description in the description is only for the sake of clarity. Those skilled in the art should take the description as a whole. other implementations.

Claims (10)

1. A folding type net grid oil containment boom for a torrent river and a laying method thereof are characterized by comprising the following steps from top to bottom: the floating body structure, the skirt body structure, the net grid structure and the oil containment boom fixing structure;

the floating body structure consists of a floater and an outer wrapping cloth, the floater is made of EPE waterproof cotton, and the outer wrapping cloth is made of PVC waterproof cloth;

the skirt body structure consists of skirt body connecting cloth, connecting pieces and an expansion bag, the skirt body connecting cloth is 3 pieces, the materials are PVC cloth, and the upper end of the skirt body connecting cloth is connected with the outer wrapping cloth in a high-strength sewing mode; the connecting piece is positioned at the lower end of the skirt body connecting cloth and is riveted with the skirt body connecting cloth; the expansion bag is fixed at the lower end of the middle-layer skirt connecting cloth through the connecting sheet by screws;

the grid structure consists of 4 aluminum alloy screen plates, the aluminum alloy screen plates are arranged by filling hexagonal cells, and the screen plates are connected through 3 hinges to form a foldable grid; the upper end of the mesh grid is fixed at the lower end of the connecting cloth of the skirt bodies at the front side and the rear side by screws through the connecting sheets;

the oil containment boom fixing structure consists of a floating body fixing anchor seat and a mesh grid fixing anchor seat, wherein the floating body fixing anchor seat is fixedly connected to two sides of the floating body of the oil containment boom; the mesh grid fixing anchor seats are fixedly connected to two sides of the mesh grid;

the folding type net grid oil containment boom laying method for the torrent river comprises the following steps:

a) filling the expansion bag with water-absorbing expansion material, and quickly and fixedly connecting the expansion bag at the lower end of the connecting cloth of the intermediate layer skirt body through the connecting sheet;

b) the net grid is opened and is quickly and fixedly connected with the lower ends of the connecting cloth of the front and the rear skirt bodies through the connecting pieces;

c) putting the foldable mesh fence oil fence into water, and expanding the foldable mesh fence after the water absorbing material absorbs water to form a front layer of mesh fence and a rear layer of mesh fence;

d) the foldable mesh fence oil containment boom is dragged to a river to shore fixing anchor along the laying direction by a tugboat, and the oil containment boom is anchored on two sides by the oil containment boom fixing structure.

2. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the foldable mesh fence oil fence is 850mm long in single section, 400mm high in floating body and 500mm high in the skirt structure and the mesh fence structure.

3. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the length of the front layer and the rear layer of the skirt body connecting cloth is 200mm, and the length of the middle-layer skirt body connecting cloth is 150 mm.

4. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the connecting piece is provided with a threaded hole at an interval of 100 mm.

5. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the grid material and the connecting sheet material are made of 7075 aluminum alloy with low density and high strength.

6. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the thickness of the aluminum alloy screen plate is 10 mm; the grid is hexagonal, and the diameter of the inscribed circle is 20 mm.

7. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the surface of the aluminum alloy screen plate comprises a grid surface coated with a layer of thin oil absorption felt.

8. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the mesh porosity K was 0.65.

9. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the expansion bag is a long cylindrical water-absorbing telescopic fiber bag, and the contained water-absorbing expansion material is water-absorbing resin fiber SAP.

10. The folding type net grid oil containment boom for the torrent river and the arranging method thereof according to claim 1 are characterized in that: the maximum diameter of the expansion bag after water absorption and expansion is 120 mm.

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