CN103803028B - The platform bulkhead structure of a kind of antiknock, fire prevention, insulation, noise reduction - Google Patents

Abstract

The invention provides an explosion-resistant, fireproof, insulating and noise-reducing bulkhead structure of an offshore platform, which includes a pair of sandwich panels arranged in parallel up and down and an impact-resistant structure. The impact-resistant structure consists of three leaf springs respectively. The upper and lower trapezoidal groups, damping material is arranged between the upper and lower trapezoidal groups, the adjacent upper and lower trapezoidal groups are connected by shock-absorbing springs, and the interior of the upper and lower trapezoidal groups is filled with the first filler; the sandwich panel includes a pair of upper and lower skins arranged in parallel The outer surface of the skin board is coated with an insulating layer, a sandwich board is sandwiched between two skin boards, and the gap between the sandwich board and the skin board is filled with a second filler. The invention has the advantages of anti-explosion, fire prevention, insulation, noise reduction, simple structure, easy coating construction and quality inspection, short construction time and is suitable for rapid repair and the like.

Description

An offshore platform bulkhead structure with anti-explosion, fire prevention, insulation and noise reduction

technical field

The invention belongs to the field of ocean engineering, in particular to a bulkhead structure of an ocean platform.

Background technique

With the development of the world economy, onshore oil and gas resources are basically exhausted, while oceans are rich in oil and gas resources, and the focus of human resource development has shifted to the ocean. Offshore oil and gas exploitation must rely on offshore platforms. As we all know, offshore oil and gas development has the characteristics of high investment, complex technology, difficult construction, harsh operating environment and many random factors. As the infrastructure for the development of offshore oil and gas resources, offshore platforms have been in complex and harsh marine environments for a long time. In addition to normal working loads and environmental loads, they are often affected by risk loads (explosions, fires, collisions, etc.). The risks mainly come from the defects of the facilities themselves and the oil and gas leakage of production and development facilities and equipment caused by human errors, as well as the damage and loss caused by combustion and explosion to people, facilities, equipment and the environment after ignition. These accidents not only cause casualties and heavy economic losses, but also cause serious pollution and damage to the marine environment and marine ecology. A large number of offshore platform accident statistics show that oil and gas explosions are one of the important reasons for the failure of offshore platform structures. Therefore, it is of great significance to control the damage caused by oil and gas explosion, and actively carry out research on the dynamic response of offshore platform structure and bulkhead anti-blast structure under the load of oil and gas explosion, which is of great significance to improve the anti-knock performance of offshore platforms.

Judging from the existing bulkheads of offshore platforms, explosion-proof facilities represented by explosion-proof walls are generally used for risk control. Mainly through the selection of steel plates with good impact resistance materials, there are few filled with buffer layers and fire-proof, insulating and noise-reducing materials. Although this method can effectively prevent the deformation and damage of the bulkhead caused by the explosion, when an accident occurs, the bulkhead does not have a good buffer area and cannot achieve a good shock absorption effect, and it cannot meet the requirements of explosion resistance and fire protection during daily service. , insulation, noise reduction and other multiple functions. The existing bulkheads have deficiencies in explosion resistance, fire prevention, insulation, noise reduction, and shock absorption during high-energy impacts, which need to be further improved.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, provide an anti-explosion, fire prevention, insulation, noise reduction offshore platform bulkhead structure, to make up for the buffering of the offshore platform bulkhead in fire prevention, insulation, noise reduction and high energy impact Defects in shock absorption and other aspects.

To achieve the above object, the present invention adopts the following technical solutions:

An explosion-resistant, fireproof, insulating, and noise-reducing offshore platform bulkhead structure, including a pair of sandwich panels arranged in parallel up and down and an impact-resistant structure. The impact-resistant structure includes an upper and lower trapezoidal group composed of three leaf springs. , a damping material is provided between the upper and lower trapezoidal groups, and the adjacent upper and lower trapezoidal groups are connected by shock-absorbing springs, and the interior of the upper and lower trapezoidal groups is filled with the first filler; the sandwich panel includes a pair of upper and lower skin panels arranged in parallel, and the skin The outer surface of the board is coated with an insulating layer, a sandwich board is sandwiched between two skin boards, and the gap between the sandwich board and the skin board is filled with a second filler.

Preferably, the impact-resistant structure is diabolo-shaped.

Preferably, the sandwich panel is a galvanized steel sheet, and its longitudinal section is one of C-shaped, I-shaped, V-shaped, X-shaped, Y-shaped, Z-shaped, rectangular, T-shaped or circular.

Preferably, the first filler is polyurethane foam; the second filler is thermoplastic polyimide foam.

Preferably, the two layers of skin panels are galvanized steel sheets with a thickness of 2mm.

Preferably, the insulating layer is a high temperature resistant insulating ceramic coating with a thickness of 2mm.

Preferably, the damping material is foamed silicone rubber with a thickness of 5mm.

Preferably, the leaf spring is a damping leaf spring.

Preferably, the sandwich panel has a height of 20mm and a wall thickness of 2mm.

Preferably, the height of the impact-resistant structure is 35mm.

The beneficial effects of the present invention are: the present invention has high specific strength and excellent vibration and noise reduction properties; it reduces the possibility of electric fire and has strong insulation; it reduces the possibility of cracks and fatigue, and has great Strong shock absorption performance; good flame retardancy, anti-open flame, no smoke, no toxic and harmful gas structure; light weight, greatly reducing the number of welding and welding materials, and short welding time; simple and convenient coating construction and quality inspection , improved reliability and long service life.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the local diagram of diabolo type anti-shock structure;

Fig. 3 is the structural representation of the sandwich plate in embodiment 1;

Fig. 4 is the structural representation of the sandwich plate in embodiment 2;

Fig. 5 is the structural representation of the sandwich plate in embodiment 3;

Fig. 6 is the structural representation of the sandwich plate in embodiment 4;

Fig. 7 is the structural representation of the sandwich plate in embodiment 5;

Fig. 8 is the structural representation of the sandwich plate in embodiment 6;

Fig. 9 is the structural representation of the sandwich plate in embodiment 7;

Fig. 10 is the structural representation of the sandwich plate in embodiment 8;

FIG. 11 is a schematic structural view of the sandwich panel in Example 9. FIG.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1 and 2, an explosion-resistant, fireproof, insulating, and noise-reducing offshore platform bulkhead structure includes a pair of sandwich panels arranged in parallel up and down and an impact-resistant structure. The impact-resistant structure consists of three An upper and lower trapezoidal group composed of leaf springs 5, damping material 6 is arranged between the upper and lower trapezoidal groups, and the adjacent upper and lower trapezoidal groups are connected by shock-absorbing springs 7, and the interior of the upper and lower trapezoidal groups is filled with the first filler 8; the sandwich panel includes A pair of upper and lower skin panels 2 arranged in parallel, the outer surface of the skin panels 2 is coated with an insulating layer 1, a sandwich panel 3 is sandwiched between the two skin panels, and the gap between the sandwich panels 3 and the skin panels 2 is filled There is a second filling 4.

In order to reduce the noise decibel and heat insulation of the bulkhead in daily use, and play a key protective role in the shock wave, improve the energy absorption of the structure, reduce the corrosion of the bulkhead, block radiation, and further insulate, the first filler 8 is Polyurethane foam; the second filler 4 is thermoplastic polyimide foam.

In order to make the bearing strength of the diabolo anti-shock structure buffer the shock wave, reduce the deformation of the upper and lower sandwich plates, and improve the impact environment, the leaf spring 5 is a shock-absorbing leaf spring.

As shown in Figure 3, the sandwich panel 3 is a galvanized steel plate with a C-shaped longitudinal section, so that the load-bearing strength of the sandwich panel can buffer the shock wave, reduce the deformation of the upper skin panel structure, and improve the impact environment.

The two-layer skin panels 2 are galvanized steel sheets with a thickness of 2mm.

In order to make the circuit system in the bulkhead damaged by the shock wave and cause leakage, it can have a good insulation effect under high temperature conditions, block the current flow, and avoid electrical fires. The insulating layer 1 is a high-temperature-resistant insulating ceramic coating with a thickness of 2mm.

In order to make the bearing strength of the diabolo impact-resistant structure buffer the shock wave, reduce the deformation of the upper and lower trapezoidal groups, and improve the impact environment, the damping material 6 is foamed silicone rubber with a thickness of 5 mm.

The height of the sandwich panel 3 is 20mm, and the wall thickness is 2mm.

The height of the diabolo impact-resistant structure is 35mm.

Example 2

As shown in FIG. 4 , the longitudinal section of the sandwich panel 3 in this embodiment is I-shaped. Others are the same as embodiment 1.

Example 3

As shown in FIG. 5 , the longitudinal section of the sandwich panel 3 in this embodiment is V-shaped. Others are the same as embodiment 1.

Example 4

As shown in FIG. 6 , the longitudinal section of the sandwich panel 3 in this embodiment is X-shaped. Others are the same as embodiment 1.

Example 5

As shown in FIG. 7 , the longitudinal section of the sandwich panel 3 in this embodiment is Y-shaped. Others are the same as embodiment 1.

Example 6

As shown in FIG. 8 , the longitudinal section of the sandwich panel 3 in this embodiment is Z-shaped. Others are the same as embodiment 1.

Example 7

As shown in FIG. 9 , the longitudinal section of the sandwich panel 3 in this embodiment is rectangular. Others are the same as embodiment 1.

Example 8

As shown in FIG. 10 , the longitudinal section of the sandwich panel 3 in this embodiment is T-shaped. Others are the same as embodiment 1.

Example 9

As shown in FIG. 10 , the longitudinal section of the sandwich panel 3 in this embodiment is circular. Others are the same as embodiment 1.

In the above embodiments, the thickness of the sandwich panel 3 can be designed according to the cushioning performance requirements. The bulkhead structure is composed of a sandwich structure and upper and lower skins by welding or gluing. During the manufacturing process, a welding layer or an adhesive film is placed between the skin and the sandwich layer, and then heated at a high temperature to bond them. The polymer material core material thermoplastic polyimide foam that is in contact with the steel surface is filled between the two layers of steel plates, and the elastic body of the polyimide foam material is bonded between the I-type and the skin plate with high strength to provide continuous uniformity for the steel plate The support greatly improves the local bending resistance of the steel plate.

In general, the rigidity of the present invention can guarantee normal use, and the polyurethane foam and thermoplastic polyimide foam can play a good noise reduction effect. In the event of some accidental explosion causing a fire, the energy is absorbed by sacrificing the core layer and filling. Polyurethane is an elastic material, which can realize the transmission and dispersion of the shear force between the core material and the leaf spring. Even under the load of upswing or sag, the leaf spring and the elastic core layer can be bent and deformed as a whole, and there will be no Local bending causes deformation of the sandwich panel. Therefore, the diabolo impact-resistant structure as a whole can bear much greater load-bearing capacity than that of pure steel plates. Since the cushioning properties of the sandwich panel and the filling layer are much greater than that of the skin panel, different degrees of cushioning and deformation are performed through the I-type plate and thermoplastic polyimide foam, and the shear force is evenly transmitted to the adjacent structure. , avoiding a large number of scattered structural supports. Good insulation effect is achieved by high temperature resistant insulating ceramic coating. Fire protection through thermoplastic polyimide foam. So as to protect the offshore platform and stop the fire from spreading. To minimize the hazards caused by explosions, the anti-explosion, fire prevention, insulation, and noise-reduction offshore platform bulkhead structures of all embodiments have passed the anti-explosion capability test under the conditions of 20kg explosives and 3.5m explosion distance, and all of them can reach the Can be more than 89.7%.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above description, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (10)

1. An anti-explosion, fire prevention, insulation, noise-reducing offshore platform bulkhead structure, is characterized in that: comprise a pair of interlayer panels arranged in parallel up and down and an anti-shock structure, said anti-shock structure comprises three boards respectively The upper and lower trapezoidal groups are composed of springs (5), damping material (6) is arranged between the upper and lower trapezoidal groups, and the adjacent upper and lower trapezoidal groups are connected by shock-absorbing springs (7), and the upper and lower trapezoidal groups are filled with the first filler ( 8); the sandwich panel includes a pair of upper and lower skin panels (2) arranged in parallel, the outer surface of the skin panel (2) is coated with an insulating layer (1), and a sandwich panel (3) is sandwiched between the two skin panels , the gap between the sandwich panel (3) and the skin panel (2) is filled with a second filler (4). 2. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the impact-resistant structure is diabolo-shaped. 3. The explosion-resistant, fireproof, insulating, and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the sandwich panel (3) is a galvanized steel plate, and its longitudinal section is C-shaped, I One of shape, V-shape, X-shape, Y-shape, Z-shape, rectangle, T-shape or circle. 4. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the first filler (8) is polyurethane foam; the second filler (4) is Thermoplastic polyimide foam. 5. The explosion-resistant, fire-proof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the two layers of skin panels (2) are all galvanized steel plates with a thickness of 2mm. 6. The explosion-resistant, fireproof, insulating, and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the insulating layer (1) is a high-temperature-resistant insulating ceramic coating with a thickness of 2mm. 7. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the damping material (6) is foamed silicone rubber with a thickness of 5mm. 8. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1, characterized in that: the leaf spring (5) is a shock-absorbing leaf spring. 9. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1 or 3, characterized in that: the sandwich panel (3) has a height of 20mm and a wall thickness of 2mm. 10. The explosion-resistant, fireproof, insulating and noise-reducing offshore platform bulkhead structure according to claim 1 or 2, characterized in that: the height of the impact-resistant structure is 35 mm.