CN212080323U - Self-floating pipeline structure for dredging construction - Google Patents

Abstract

The utility model relates to a dredge construction with self-floating pipeline structure. Comprises a plurality of pipeline units connected in sequence; the pipeline unit comprises a buoyancy tank assembly and two self-floating rubber pipe assemblies, and the two self-floating rubber pipe assemblies are sequentially connected to the rear of the buoyancy tank assembly; the buoyancy tank assembly comprises a first buoyancy tank and a second buoyancy tank which are oppositely arranged, and further comprises a buoyancy tank steel pipe arranged between the inner sides of the tops of the first buoyancy tank and the second buoyancy tank, a first flange is arranged at the front end of the buoyancy tank steel pipe, a second flange is arranged at the rear end of the buoyancy tank steel pipe, and an exhaust assembly is arranged on the top wall of the buoyancy tank steel pipe; the self-floating rubber pipe assembly comprises two inner steel pipes which are respectively positioned at the front part and the rear part, wherein a front flange is arranged at the front end of the inner steel pipe at the front part, and a rear flange is arranged at the rear end of the inner steel pipe at the rear part; be equipped with interior glue film on the inner wall of two inside steel pipes, be equipped with the enhancement layer in the outside of glue film, be equipped with the buoyancy layer in the outside of enhancement layer, be equipped with outer glue film in the outside on buoyancy layer. The utility model discloses simple structure, be convenient for carry out the turn-over to the self-floating rubber tube.

Description

Self-floating pipeline structure for dredging construction

Technical Field

The utility model belongs to the technical field of the construction equipment is dredged, especially, relate to a dredge construction with self-floating pipeline structure.

Background

In the construction of dredging and hydraulic filling projects in recent years, the self-floating rubber pipe is widely applied to hydraulic filling construction, and the good wind wave resistance and wear resistance of the self-floating rubber pipe are favored by construction enterprises. However, in the using process, the weight of the underwater pipe body is increased due to the fact that the surface layer of the pipe body is partially damaged and is soaked and marine organisms are attached, and the pipeline is difficult to turn over. In long-term hydraulic filling construction, the local abrasion of the pipe body is serious, the self-floating rubber pipe bursts, and normal construction is influenced. The development of modern dredging vessels inevitably drives the continuous improvement and promotion of the supporting equipment thereof so as to adapt to the development requirements of the continuously developing dredging industry. The hydraulic filling pipeline is the most important hydraulic filling corollary equipment of a construction ship, particularly the overwater pipeline is from an original single steel pipe, a short rubber pipe and a buoy to the existing overwater self-floating rubber pipe, the quality development is realized, and the hydraulic filling pipeline is widely used at present due to better wear resistance and wind and wave resistance.

In the process of using the self-floating rubber pipe by blow filling, about two thirds of the whole pipe body is below the water surface, the external force action in the construction can cause the local damage of the external packing layer of the pipe body, and the seawater is gradually immersed into the inner part of the buoyancy layer due to the long-time immersion in the seawater, so that the weight of the immersed pipe body is increased. In addition, in summer in the south sea area and the north sea area of China, a lot of marine organisms such as sea sedges, oysters, sea siphons and the like can grow on the submerged parts of the pipe bodies and are tightly attached to the submerged parts of the pipe bodies, so that the pipeline cannot be turned over by the self weight of the pipe bodies or local external force, and even if the pipe bodies are turned over under the action of external force, the proper turning state cannot be maintained due to the influence of the submerged parts of the buoyancy layer and the attached marine organisms, and the pipe body turning operation cannot be finished.

Because the self-floating rubber pipe is mainly made of rubber materials, a repair process is not available at present, the whole pipeline is scrapped due to burst caused by local abrasion, so that not only is one hundred thousand of direct losses required, but also the whole construction production is influenced. In this case, when a burst condition occurs in a section, it means that the entire line is at risk of bursting for a short period of time, and the resulting losses are significant. The whole pipeline is uniformly abraded (inner wall abrasion) so as to achieve the maximum service time of the pipeline, reduce the cost waste, and exert the maximum value of each pipeline to the maximum extent in the construction, which is the aim pursued in the construction management. The existing self-floating pipeline system cannot perform the turning operation, so that the service life of the self-floating pipeline is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the known art and provide a simple structure, be convenient for carry out the dredging construction of turn-over to the self-floating rubber tube and use self-floating pipeline structure, through regularly carrying out the life that the turn-over promoted the self-floating rubber tube to the self-floating rubber tube, reduce the construction cost of engineering.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a self-floating pipeline structure for dredging construction comprises a plurality of pipeline units which are connected in sequence; the pipeline unit comprises a buoyancy tank assembly and two self-floating rubber pipe assemblies, and the two self-floating rubber pipe assemblies are sequentially connected to the rear of the buoyancy tank assembly; the buoyancy tank assembly comprises a first buoyancy tank and a second buoyancy tank which are oppositely arranged, a plurality of lower cross beams are arranged between the middle parts of the inner side walls of the first buoyancy tank and the second buoyancy tank, the buoyancy tank assembly also comprises a buoyancy tank steel pipe arranged between the inner sides of the tops of the first buoyancy tank and the second buoyancy tank, a plurality of upper cross beams are arranged between the buoyancy tank steel pipe and the first buoyancy tank and between the buoyancy tank steel pipe and the second buoyancy tank, a first flange is arranged at the front end of the buoyancy tank steel pipe, a second flange is arranged at the rear end of the buoyancy tank steel pipe, and an exhaust assembly is arranged on the top wall of the buoyancy tank steel pipe; the self-floating rubber pipe assembly comprises two inner steel pipes which are respectively positioned at the front part and the rear part, wherein a front flange is arranged at the front end of the inner steel pipe at the front part, and a rear flange is arranged at the rear end of the inner steel pipe at the rear part; inner rubber layers are arranged on the inner walls of the two inner steel pipes, reinforcing layers are arranged on the outer sides of the inner rubber layers, buoyancy layers are arranged on the outer sides of the reinforcing layers, and outer rubber layers are arranged on the outer sides of the buoyancy layers; a plurality of lifting lugs with lifting holes are respectively arranged between the front end part of the front inner steel pipe and the front flange and between the rear end part of the rear inner steel pipe and the rear flange; the front flange of the previous self-floating rubber pipe assembly is in butt joint connection with the second flange of the buoyancy tank assembly, and the front flange of the next self-floating rubber pipe assembly is in butt joint connection with the rear flange of the previous self-floating rubber pipe assembly.

The utility model has the advantages that: the utility model provides a dredging construction that structural design is simple reasonable is with pipeline structure that floats compares with the pipeline that floats certainly that current adoption is obtained from the superficial rubber tube tandem system, makes among this technical scheme from floating the pipeline and comprises a plurality of pipeline units, has realized the segmentation processing to the pipeline that floats certainly. When the self-floating rubber pipe needs to be turned over, only two self-floating rubber pipe components between the buoyancy tank components of two adjacent pipeline units need to be disconnected with the two adjacent buoyancy tank components respectively, so that rapid turning treatment can be realized under the assistance of external facilities (such as anchor boats and other engineering ships), the problem that the existing self-floating pipeline structure is too long, and the bottom of the existing self-floating rubber pipe cannot be turned over due to too heavy is solved, and the operation is simple. The self-floating rubber pipe is turned over, so that the inner wall of the self-floating rubber pipe can be abraded relatively uniformly, and the service life of the self-floating rubber pipe is prolonged. On the other hand, because the flotation tank subassembly possesses two flotation tanks, consequently when setting up a plurality of flotation tank subassemblies on the self-floating pipeline, can also increase the buoyancy of self-floating pipeline to a certain extent, reduce the degree of depth that the self-floating rubber tube immerges into the aquatic to a certain extent, consequently the self-floating rubber tube receives the influence of factors such as soaking, biological adhesion less, has further promoted the life of self-floating rubber tube. Through set up the exhaust subassembly on the flotation tank steel pipe, can make the gas of gathering in the self-floating pipeline in time discharge outside the self-floating pipeline, avoid the pipe burst problem that the inside atmospheric pressure of pipeline leads to too high.

Preferably: the exhaust assembly comprises a connecting pipe arranged on the top wall of the steel pipe of the buoyancy tank, an exhaust valve is arranged above the connecting pipe, and an exhaust pipe is arranged above the exhaust valve.

Preferably: the two groups of exhaust assemblies are respectively positioned on the left part of the middle part and the right part of the middle part on the top wall of the steel pipe of the buoyancy tank; the connecting pipe and the exhaust valve and the exhaust pipe are connected by flanges; the upper end of the exhaust pipe is bent back downwards.

Preferably: sealing gaskets are arranged between the front flange of the previous self-floating rubber pipe assembly and the second flange of the buoyancy tank assembly and between the front flange of the next self-floating rubber pipe assembly and the rear flange of the previous self-floating rubber pipe assembly.

Preferably: the inner end of each upper cross beam is welded and fixed with the side wall of the buoyancy tank steel pipe, and the outer end of each upper cross beam is welded and fixed with the top walls of the first buoyancy tank and the second buoyancy tank on the side where the upper cross beam is located; one end of each lower cross beam is welded and fixed with the inner side wall of the first floating box, and the other end of each lower cross beam is welded and fixed with the inner side wall of the second floating box.

Preferably: the two ends of the middle lower part of each of the first buoyancy tank and the second buoyancy tank are inclined planes, lantern rings are installed in the middle of the four inclined planes, each lantern ring is connected with an anchor cable, and the outer end of each anchor cable is connected with an anchor.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a half-section of the buoyancy tank assembly of FIG. 1;

fig. 3 is a partial sectional structural schematic view of the self-floating hose assembly of fig. 1.

In the figure: 1. a buoyancy tank assembly; 1-1, a first flange; 1-2, buoyancy tank steel pipes; 1-3, a first buoyancy tank; 1-4, an exhaust pipe; 1-5, an exhaust valve; 1-6, connecting pipe; 1-7, an upper cross beam; 1-8, a second flange; 1-9, a second buoyancy tank; 1-10 parts of lower cross beam; 2. a self-floating hose assembly; 2-1, a front flange; 2-2, an outer crossing layer; 2-3, a rear flange; 2-4, inner steel pipes; 2-5, a reinforcing layer; 2-6, a buoyancy layer; 2-7, annular stirrups; 2-8, inner glue layer; 2-9, lifting lugs; 3. a sealing gasket; 4. and (5) fixing the bolt.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

referring to fig. 1, the self-floating pipeline structure for dredging construction of the present invention includes a plurality of pipeline units connected in sequence, so that the self-floating pipeline is segmented and composed of a plurality of repeated pipeline units.

The pipeline unit comprises a buoyancy tank assembly 1 and two self-floating rubber pipe assemblies 2, wherein the two self-floating rubber pipe assemblies 2 are sequentially connected to the rear of the buoyancy tank assembly 1, namely each pipeline unit is divided into three sections, the first section is a buoy assembly 1, and the second section and the third section are self-floating rubber pipe assemblies.

Referring to fig. 2, the buoyancy tank assembly 1 includes a first buoyancy tank 1-3 and a second buoyancy tank 1-9 disposed opposite to each other, and a plurality of lower beams 1-10 are disposed between the middle portions of the inner sidewalls of the first buoyancy tank and the second buoyancy tank. The floating box comprises a first floating box body 1-3 and a second floating box body 1-9, and is characterized by further comprising a floating box steel pipe 1-2 arranged between the inner sides of the tops of the first floating box body 1-3 and the second floating box body 1-9, and a plurality of upper cross beams 1-7 are arranged between the floating box steel pipe 1-2 and the first floating box body 1-3 and between the floating box steel pipe 1-2 and the second floating box body 1-9.

The first buoyancy tank 1-3 and the second buoyancy tank 1-9 are respectively made of steel plates through welding, and the whole buoyancy tank is of a sealing structure and used for providing sufficient buoyancy for the buoyancy tank steel pipes 1-2. Each lower cross beam 1-10 is used for connecting the first buoyancy tanks 1-3 and the second buoyancy tanks 1-9 at the middle part, and each lower cross beam 1-10 can be made of thick-wall steel pipes, I-shaped steel and the like and is arranged at equal intervals in the transverse direction. Each upper cross beam 1-7 is used for connecting a buoyancy tank steel pipe 1-2 with a first buoyancy tank 1-3 and a buoyancy tank steel pipe 1-2 with a second buoyancy tank 1-9, and each lower cross beam 1-10 can be made of thick-wall steel pipes, I-shaped steel and the like.

In the embodiment, the inner end of each upper cross beam 1-7 is welded and fixed with the side wall of a buoyancy tank steel pipe 1-2, and the outer end is welded and fixed with the top walls of a first buoyancy tank 1-3 and a second buoyancy tank 1-9 on the side where the inner end is located; one end of each lower cross beam 1-10 is welded and fixed with the inner side wall of the first buoyancy tank 1-3, and the other end is welded and fixed with the inner side wall of the second buoyancy tank 1-9.

The front end of the buoyancy tank steel pipe 1-2 is provided with a first flange 1-1, the rear end is provided with a second flange 1-8, and the top wall of the buoyancy tank steel pipe 1-2 is provided with an exhaust assembly. Wherein, the first flange 1-1 and the second flange 1-8 are used for butt joint connection between pipelines, and the exhaust component is used for exhausting gas accumulated in the self-floating pipeline out of the pipeline, so as to avoid overhigh internal air pressure.

In the embodiment, the exhaust assembly comprises connecting pipes 1-6 arranged on the top walls of the buoyancy tank steel pipes 1-2, exhaust valves 1-5 are arranged above the connecting pipes 1-6, exhaust pipes 1-4 are arranged above the exhaust valves 1-5, and the lower ends of the connecting pipes 1-6 are welded and fixed with the top walls of the buoyancy tank steel pipes 1-2. In operation, when the internal gas pressure rises to the response value of the exhaust valve 1-5, the exhaust valve 1-5 is opened to discharge the internal gas through the exhaust pipe 1-4.

Further, in order to ensure the exhaust effect, the exhaust assemblies are arranged into two groups, and the two groups of exhaust assemblies are respectively arranged at the left part of the middle part and the right part of the middle part on the top wall of the buoyancy tank steel pipe 1-2, so that a front exhaust assembly and a rear exhaust assembly are arranged on each pipeline unit, and the gas in the pipeline can be exhausted from the front part or the rear part. The connecting pipes 1-6 are connected with the exhaust valves 1-5, and the exhaust valves 1-5 are connected with the exhaust pipes 1-4 by flanges. The upper end of the exhaust pipe 1-4 is bent back downwards, so that rainwater, sundries and the like can be prevented from entering the exhaust pipe 1-4 to block the exhaust pipe.

The exhaust valve 1-5 comprises a valve body, an inner sleeve is arranged in the valve body, a floating ball is arranged in the inner sleeve, an air hole is formed in the side wall of the middle part of the inner sleeve, when the air pressure below the floating ball is increased to a certain value, the upward pressure of the floating ball is larger than the gravity of the floating ball, the floating ball moves upwards until the floating ball moves to the position above the air hole, and at the moment, the air flow entering from the lower port of the valve body penetrates through the air hole in the inner sleeve and is finally discharged from the. The exhaust valves 1-5 are commercially available parts and will not be described in detail.

Referring to fig. 3, the self-floating hose assembly 2 includes two inner steel pipes 2-4 respectively located at the front and rear portions, a front flange 2-1 is provided at the front end of the front inner steel pipe 2-4, and a rear flange 2-3 is provided at the rear end of the rear inner steel pipe 2-4. Both the front flange 2-1 and the rear flange 2-3 are used for butt connection.

Inner glue layers 2-8 are arranged on the inner walls of the two inner steel pipes 2-4, reinforcing layers 2-5 are arranged on the outer sides of the inner glue layers 2-8, buoyancy layers 2-6 are arranged on the outer sides of the reinforcing layers 2-5, and outer glue layers 2-2 are arranged on the outer sides of the buoyancy layers 2-6. The inner rubber layers 2-8 are used as the inner walls of the self-floating rubber pipe and bear the friction effect of the internally circulated slurry, so that the inner rubber layers 2-8 are made of wear-resistant and corrosion-resistant rubber materials, the reinforcing layers 2-5 are used for improving the structural strength of the whole self-floating rubber pipe assembly 2 and can be rubber layers with internal metal rib nets, the buoyancy layers 2-6 are used for providing buoyancy for the whole self-floating rubber pipe assembly 2 and can be made of polyethylene foam materials, the outer rubber layers 2-2 are used as surface layers which are in contact with the outside and can be in contact friction with water and the ground, so that the outer rubber layers 2-2 are made of wear-resistant and aging-resistant rubber materials, and all the layer structures are sequentially prepared from inside to outside by adopting a viscose bonding process combined with an integrated injection molding/foam molding.

In the embodiment, the outer walls of the inner ends of the two inner steel pipes 2-4 are respectively provided with a plurality of annular stirrups 2-7, and the annular stirrups 2-7 are fixedly connected with the inner steel pipes 2-4 in a welding mode and the like and are used for improving the bonding strength between the reinforcing layers 2-5 and the inner steel pipes 2-4. As shown in FIG. 3, the hoop reinforcement 2-7 is located between the inner side wall of the end of the reinforcing layer 2-5 and the outer side wall of the inner steel pipe 2-4.

In order to facilitate the lifting movement and turnover of the self-floating rubber pipe assembly 2, a plurality of lifting lugs 2-9 with lifting holes are respectively arranged between the front end part of the front inner steel pipe 2-4 and the front flange 2-1 and between the rear end part of the rear inner steel pipe 2-4 and the rear flange 2-3. In the embodiment, three lifting lugs 2-9 at each end are arranged at equal angular intervals in the circumferential direction, and the three lifting lugs 2-9 at the two ends are transversely aligned.

The front flange 2-1 of the previous self-floating rubber pipe component 2 is in butt joint connection with the second flange 1-8 of the buoyancy tank component 1, and the front flange 2-1 of the next self-floating rubber pipe component 2 is in butt joint connection with the rear flange 2-3 of the previous self-floating rubber pipe component 2. In order to ensure the tightness of the connection, in the embodiment, sealing gaskets 3 are respectively arranged between the front flange 2-1 of the previous self-floating rubber pipe assembly 2 and the second flange 1-8 of the buoyancy tank assembly 1, and between the front flange 2-1 of the next self-floating rubber pipe assembly 2 and the rear flange 2-3 of the previous self-floating rubber pipe assembly 2. And after the corresponding flanges and the sealing gaskets 3 are butted, a plurality of fastening screws 4 are adopted for transverse butt joint, fastening and fixing.

Considering that the self-floating pipeline in the construction water area usually moves in an offset manner under the action of wind waves on the surface of the water body, in order to anchor the self-floating pipeline, in this embodiment, two ends of the middle lower part of each of the first buoyancy tank 1-3 and the second buoyancy tank 1-9 are set to be inclined planes, a lantern ring is installed in the middle of each of the four inclined planes, an anchor cable is connected to each lantern ring, and an anchor is connected to the outer end of each anchor cable (the lantern ring, the anchor cable and the anchor are not shown in the figure). By throwing the anchors into the water body where the pipeline units are located, the pipeline units of the self-floating pipeline are respectively anchored, and the self-floating pipeline is effectively prevented from shifting.

Silt is when two inside transport from floating rubber tube subassembly 2, because silt subsides in the below in aqueous, consequently silt is more violent with the diapire contact friction from floating rubber tube subassembly 2, consequently, it is more serious to the destruction of diapire, after floating the pipeline operation a period, the diapire from floating rubber tube subassembly 2 will be worn and torn to the certain extent, will float rubber tube subassembly 2 whole rotation 120 from this moment, then can rotate left side or right side with the diapire that originally is worn and torn, the lateral wall that will receive less friction rotates the bottom as the diapire originally, from floating rubber tube subassembly 2 can experience twice and rotate the turn-over like this, prolong to about three times of current pipeline structure in life.

The utility model discloses a use method:

sequentially arranging a plurality of groups of pipeline units along a preset path of the self-floating pipeline, respectively anchoring, and then butting and connecting a first flange 1-1 of a buoyancy tank assembly 1 of a subsequent pipeline unit with a rear flange 2-3 of a self-floating rubber pipe assembly 2 at the rear part of a previous pipeline unit, thus forming a complete self-floating pipeline;

when the self-floating rubber pipe needs to be turned over, engineering ships such as anchor boats and the like are driven to the side position close to the self-floating rubber pipe needing to be turned over, the connection between the two self-floating rubber pipe assemblies 2 of the pipeline unit and the buoyancy tank assemblies 1 on the two sides is firstly released, and the two self-floating rubber pipe assemblies 2 are kept connected; the lifting lugs 2-9 on the two self-floating rubber tube assemblies 2 positioned on the same side part are vertically lifted by using the lifting arms of the anchor boat, so that the two self-floating rubber tube assemblies 2 rotate by 120 degrees, and then the two self-floating rubber tube assemblies 2 are connected with the buoyancy tank assemblies 1 on the two sides again; when turning over for the next time, the lifting arms of the anchor boat are also adopted to vertically lift the lifting lugs 2-9 on the two self-floating rubber tube assemblies 2 in the same side part direction, so that the two self-floating rubber tube assemblies 2 continue to rotate by 120 degrees, and after two times of turning over, silt generates uniform friction action on the inner walls of the self-floating rubber tubes, the service life is prolonged, and the pipe burst accident caused by continuous friction at the same position is avoided.

Claims (6)

1. A self-floating pipeline structure for dredging construction comprises a plurality of pipeline units which are connected in sequence; the method is characterized in that: the pipeline unit comprises a buoyancy tank assembly (1) and two self-floating rubber pipe assemblies (2), and the two self-floating rubber pipe assemblies (2) are sequentially connected to the rear of the buoyancy tank assembly (1);

the buoyancy tank assembly (1) comprises a first buoyancy tank (1-3) and a second buoyancy tank (1-9) which are arranged oppositely, a plurality of lower cross beams (1-10) are arranged between the middle parts of the inner side walls of the first buoyancy tank (1-3) and the second buoyancy tank (1-9), a plurality of upper cross beams (1-7) are arranged between the buoyancy tank steel tube (1-2) and the first buoyancy tank (1-3) and between the buoyancy tank steel tube (1-2) and the second buoyancy tank (1-9), a first flange (1-1) is arranged at the front end of the buoyancy tank steel tube (1-2), a second flange (1-8) is arranged at the rear end of the buoyancy tank steel tube (1-2), and an exhaust assembly is arranged on the top wall of the buoyancy tank steel tube (1-2);

the self-floating rubber pipe assembly (2) comprises two inner steel pipes (2-4) which are respectively positioned at the front part and the rear part, wherein a front flange (2-1) is arranged at the front end of the inner steel pipe (2-4) at the front part, and a rear flange (2-3) is arranged at the rear end of the inner steel pipe (2-4) at the rear part; inner glue layers (2-8) are arranged on the inner walls of the two inner steel pipes (2-4), reinforcing layers (2-5) are arranged on the outer sides of the inner glue layers (2-8), buoyancy layers (2-6) are arranged on the outer sides of the reinforcing layers (2-5), and outer glue layers (2-2) are arranged on the outer sides of the buoyancy layers (2-6); a plurality of lifting lugs (2-9) with lifting holes are respectively arranged between the front end part of the front inner steel pipe (2-4) and the front flange (2-1) and between the rear end part of the rear inner steel pipe (2-4) and the rear flange (2-3);

the front flange (2-1) of the previous self-floating rubber pipe component (2) is in butt joint connection with the second flange (1-8) of the buoyancy tank component (1), and the front flange (2-1) of the next self-floating rubber pipe component (2) is in butt joint connection with the rear flange (2-3) of the previous self-floating rubber pipe component (2).

2. The self-floating pipeline structure for dredging construction according to claim 1, wherein: the exhaust assembly comprises connecting pipes (1-6) arranged on the top walls of the buoyancy tank steel pipes (1-2), exhaust valves (1-5) are arranged above the connecting pipes (1-6), and exhaust pipes (1-4) are arranged above the exhaust valves (1-5).

3. The self-floating pipeline structure for dredging construction according to claim 2, wherein: the two groups of exhaust assemblies are respectively positioned on the left part of the middle part and the right part of the middle part on the top wall of the buoyancy tank steel pipe (1-2); the connecting pipes (1-6) are connected with the exhaust valves (1-5), and the exhaust valves (1-5) are connected with the exhaust pipes (1-4) by flanges; the upper ends of the exhaust pipes (1-4) are bent back downwards.

4. The self-floating pipeline structure for dredging construction according to any one of claims 1 to 3, wherein: sealing gaskets (3) are respectively arranged between the front flange (2-1) of the previous self-floating rubber pipe assembly (2) and the second flange (1-8) of the buoyancy tank assembly (1) and between the front flange (2-1) of the next self-floating rubber pipe assembly (2) and the rear flange (2-3) of the previous self-floating rubber pipe assembly (2).

5. The self-floating pipeline structure for dredging construction according to any one of claims 1 to 3, wherein: the inner end of each upper cross beam (1-7) is welded and fixed with the side wall of the buoyancy tank steel pipe (1-2), and the outer end of each upper cross beam is welded and fixed with the top wall of the first buoyancy tank (1-3) and the top wall of the second buoyancy tank (1-9) on the side where the upper cross beam is located; one end of each lower cross beam (1-10) is welded and fixed with the inner side wall of the first buoyancy tank (1-3), and the other end is welded and fixed with the inner side wall of the second buoyancy tank (1-9).

6. The self-floating pipeline structure for dredging construction according to any one of claims 1 to 3, wherein: the two ends of the middle lower part of each of the first buoyancy tank (1-3) and the second buoyancy tank (1-9) are inclined planes, lantern rings are arranged in the middle parts of the four inclined planes, each lantern ring is connected with an anchor cable, and the outer end of each anchor cable is connected with an anchor.

Images